Relevant bibliographies by topics / Exact results

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Exact results'

Author: Grafiati
Published: 14 March 2023

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Journal articles on the topic "Exact results"

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Cecotti, S., and Cumrun Vafa. "Exact Results for SupersymmetricσModels." Physical Review Letters 68, no. 7 (February 17, 1992): 903–6. http://dx.doi.org/10.1103/physrevlett.68.903.

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Arbuzov, A. B., V. V. Bytev, E. A. Kuraev, E. Tomasi-Gustafsson, and Yu M. Bystritskiy. "Exact results in QED." Physics of Particles and Nuclei 42, no. 1 (January 2011): 1–54. http://dx.doi.org/10.1134/s1063779611010023.

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McCoy, Barry. "Ising model: exact results." Scholarpedia 5, no. 7 (2010): 10313. http://dx.doi.org/10.4249/scholarpedia.10313.

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Krolikowski, W., and M. R. Belić. "Multigrating phase conjugation: exact results." Optics Letters 13, no. 2 (February 1, 1988): 149. http://dx.doi.org/10.1364/ol.13.000149.

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Hata, Hiroyuki, Sanefumi Moriyama, and Shunsuke Teraguchi. "Exact Results on Twist Anomaly." Journal of High Energy Physics 2002, no. 02 (February 25, 2002): 036. http://dx.doi.org/10.1088/1126-6708/2002/02/036.

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Loutsenko, Igor, and Oksana Yermolayeva. "Non-Laplacian growth: Exact results." Physica D: Nonlinear Phenomena 235, no. 1-2 (November 2007): 56–61. http://dx.doi.org/10.1016/j.physd.2007.07.018.

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Bensoussan, A. "Some Results on Exact Controllability." IFAC Proceedings Volumes 22, no. 4 (June 1989): 11–15. http://dx.doi.org/10.1016/s1474-6670(17)53512-0.

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Comtet, Alain, and David S. Dean. "Exact results on Sinai's diffusion." Journal of Physics A: Mathematical and General 31, no. 43 (October 30, 1998): 8595–605. http://dx.doi.org/10.1088/0305-4470/31/43/004.

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Markarian, R. "New ergodic billiards: exact results." Nonlinearity 6, no. 5 (September 1, 1993): 819–41. http://dx.doi.org/10.1088/0951-7715/6/5/009.

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Kevrekidis, P. G., V. V. Konotop, A. R. Bishop, and S. Takeno. "Discrete compactons: some exact results." Journal of Physics A: Mathematical and General 35, no. 45 (October 28, 2002): L641—L652. http://dx.doi.org/10.1088/0305-4470/35/45/103.

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Dissertations / Theses on the topic "Exact results"

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Valatka, Saulius. "Exact results in supersymmetric gauge theories." Thesis, King's College London (University of London), 2014. http://kclpure.kcl.ac.uk/portal/en/theses/exact-results-in-supersymmetric-gauge-theories(96b921b2-76fc-494d-8879-08168fac31fd).html.

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In this thesis we discuss supersymmetric gauge theories, focusing on exact results achieved using methods of integrability. For the larger portion of the thesis we study the N = 4 super Yang-Mills theory in the planar limit, a recurring topic being the Konishi anomalous dimension, which is roughly the analogue for the mass of the proton in quantum chromodynamics. The N = 4 supersymmetric Yang-Mills theory is known to be integrable in the planar limit, which opens up a wealth of techniques one can employ in order to nd results in this limit valid at any value of the coupling. We begin with perturbation theory where the integrability of the theory rst manifests itself. Here we showcase the rst exact result, the so-called slope function, which is the linear small spin expansion coecient of the generalized Konishi anomalous dimension. We then move on to exact results mainly achieved using the novel quantum spectral curve approach, the method allowing one to nd scaling dimensions of operators at arbitrary values of the coupling. As an example we nd the second coecient in the small spin expansion after the slope, which we call the curvature function. This allows us to extract non-trivial information about the Konishi operator. Methods of integrability are also applicable to other supersymmetric gauge theories such as ABJM, which in fact shares many similarities with N = 4 super Yang-Mills. We briefly review these parallel developments in the last chapter of the thesis.
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Kingaby, Thomas. "Exact results in supersymmetric field theory." Thesis, Swansea University, 2003. https://cronfa.swan.ac.uk/Record/cronfa42267.

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This thesis examines N = 2 Super-Yang-Mills theory where the low-energy effective action of the theory is governed by a holomorphic function called the prepotential. The Seiberg-Witten solution of the theory determines the prepotential in terms of an complex curve and, once we compactify the theory on a circle, we will examine the identification of this complex curve with the spectral curve of the Calogero-Moser integrable system. Since the supersymmetry restricts the perturbative contributions to the prepotential, the results we gain are exact. Further, they are independent of the compactification radius. The generalization to the quiver models, with gauge group SU(N)k, is introduced along with the spin generalization of the integrable system. The massive vacua of these theories have been determined previously, here we examine the case of a specific gauge group in order to determine the complete phase structure, including the massless vacua. We then move on to determining contributions coming from instantons to the prepotential of the theory with gauge group SU(N). We see how by lifting the theory onto 5 dimensions the functional integral on the instanton moduli space is realized as a quantum mechanical sigma-model with the moduli space as a target. However, just such a model is shown to calculate a particular index of the manifold, in this case a particular equivariant index since the space has isometries. We account for the non-compact nature of the moduli space by removing boundary terms and then calculate explicit results in the case of SU(2).
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Lorenzen, Jakob Christian. "Exact results in the gauge/gravity duality." Thesis, King's College London (University of London), 2016. https://kclpure.kcl.ac.uk/portal/en/theses/exact-results-in-the-gaugegravity-duality(39ad751a-a7fa-4bc5-8897-ed741649f18a).html.

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In this thesis we study the gauge/gravity duality and exact results in supersymmetric quantum field theories obtained using localization. We construct the gravity duals to a broad class of N = 2 supersymmetric gauge theories defined on a general class of three-manifolds. The gravity backgrounds are supersymmetric solutions of gauged four-dimensional supergravity and encompass all known examples of such solutions. We find that the holographically renormalized on-shell action agrees with the free energy of the field theory, which has previously been computed via localization of the partition function. Next, we study the Casimir energy of four-dimensional N = 1 supersymmetric field theories in the context of the rigid limit of new minimal supergravity. We revisit the computation of the localized partition function on S1 S3, and consider the same theories in the Hamiltonian formalism on R S3. We compute the vacuum expectation value of the canonical Hamiltonian using zeta function regularization, and show that this interpolates between the supersymmetric Casimir energy and the ordinary Casimir energy of supersymmetric field theories. In general, the Casimir energy depends on the regularization scheme and is therefore ambiguous. However, we show that for N = 1 supersymmetric field theories on the cylinder R S3, the supersymmetric Casimir energy is well-defined and scheme-independent, provided the regularization scheme preserves supersymmetry. Finally, we investigate the gravity duals of such N = 1 theories on R S3. Specifically, we study supersymmetric solutions of five-dimensional minimal gauged supergravity using a known classification. We propose an ansatz based on a four-dimensional local orthotic Kahler metric and reduce the problem to a single sixth-order equation for two functions, each of one variable. We find an analytic, asymptotically locally AdS solution comprising five parameters. For a conformally at boundary, this reduces to a previously known solution with three parameters, representing the most general solution of this type known in minimal gauged supergravity. We discuss the relevance for this solution to account for the supersymmetric Casimir energy, finding the answer to be in the negative.
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Garolera, Huguet Blai. "Probing gauge theories: Exact results and holographic computations." Doctoral thesis, Universitat de Barcelona, 2015. http://hdl.handle.net/10803/289346.

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The holographic duality between gauge theories and string theories has opened a new door to access the strongly coupled regime of quantum field theories and offers, at the same time, a completely new way to understand the elusive nature of quantum gravity and the non-perturbative regime of string theory. After almost two decades of research, the current status of the correspondence is that of a solid conjecture that has passed a great number of nontrivial tests, to the point that it is generally believed to be true. The present thesis includes a collection of four papers published in peer-reviewed scientific journals, all of them in the context of the AdS/CFT correspondence and with a particular focus on studying gauge theories by inserting heavy external probes, following prescribed trajectories and transforming under various representations of the gauge group. Each of these works reports a little step forward in the development of new strategies for capturing correc- tions beyond the leading order as well as in using exact results available in quantum field theory in order to derive exact expressions for other relevant observables and new non-trivial string theory predictions. In chapters 2 and 3 we use the AdS/CFT correspondence in order to compute several observables of N = 4 SU (N ) super Yang-Mills theory related with the presence of an infinitely heavy particle transforming in the k-symmetric or the k-antisymmetric representations of the gauge group and following particular trajectories. This is achieved by means of adding certain D-brane probes with electric fluxes turned on and reaching the boundary of AdS on the very trajectories followed by the dual particles. For the antisymmetric case we consider D5-branes reaching the boundary at arbitrary time-like trajectories, while for the symmetric case, we consider a D3-brane fully embedded in AdS5 that reaches the boundary at either a straight line or a hyperbola. This generalizes previous computations that used fundamental strings, which are claimed to be dual to infinitely heavy point particles transforming in the fundamental. Besides the intrinsic interest of these generalizations, our main motivation in studying them is that, as it happens in the computation of certain Wilson loops, the results obtained with D3-branes give an all- orders series of corrections in 1/N to the leading order result for the fundamental representation obtained by means of fundamental strings. It is important to remark, one more time, that we can not really extrapolate up to k = 1, since this is beyond the regime of validity of the supergravity approximation. Therefore, it is not justified a priori to set k = 1 in our results. Nevertheless, when compared with the exact results available, we find that the D3-brane computation reproduces the correct result in the large N , λ limit and with k = 1. This better than expected performance suggests the exciting possibility that certain D3-branes with electric fluxes might capture correctly all the 1/N corrections, but it is fair to say that we still lack of a precise string-theoretic argument to prove this.
Durant les darreres dues dècades ha aparegut un nou paradigma que permet reformular completament certes teories quàntiques de camps i ens aporta una nova eina que ens permet realitzar càlculs analítics en règims fins ara inaccessibles. Aquest nou paradigma sorgeix del descobriment d’una correspondència o dualitat exacta entre dues teories aparentment molt diferents. Per una banda de la dualitat tenim certes teories quàntiques de camps, com per exemple les denominades teories de Yang-Mills, similars a les teories del Model Estàndard. Aquestes descriuen partícules interactuant en un espai pla d-dimensional sense gravetat. A l’altra banda de la dualitat trobem teories que inclouen la gravetat, com ara la Teoria de la Relativitat General d’Einstein o les seves generalitzacions en el marc de la Teoria de Cordes. Aquestes teories de gravetat estan definides sobre espais de dimensió més alta que d, i és per això que aquesta correspondència rep sovint l’adjectiu de “hologràfica”. Depenent del context, aquesta rep el nom de dualitat gauge/gravetat, dualitat gauge/corda o AdS/CFT (acrònim anglès per la correspondència particular entre teoria de cordes a espais d’Anti-de Sitter i teories de camps conformes). Fins ara, una de les correspondències més ben estudiades i que comprenem millor (i sobre la qual es centra la present tesi) és la dualitat entre la teoria quatre-dimensional N = 4 super Yang-Mills amb grup de gauge SU (N ) i teoria de cordes tipus IIB en un espai deu-dimensional AdS5 × S5 . Aquesta tesi presenta una recopilació de quatre articles publicats en revistes científiques d’alt impacte, tots ells en el camp de la correspondència AdS/CFT i centrats en l’estudi de teories gauge supersimètriques mitjançant la inserció de partícules de prova infinitament massives, seguint trajectòries determinades i transformant sota diverses representacions del grup de gauge. Cadascun d’aquests treballs aporta un pas endavant en el desenvolupament de noves estratègies per calcular correccions més enllà del primer ordre així com en l’ús de resultats exactes accessibles a la Teoria Quàntica de Camps per tal de derivar expressions exactes d’altres observables rellevants de la teoria i realitzar prediccions de Teoria de Cordes.
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Camacho, Gonzalo. "Exact results in the Interacting Resonant Level Model." Thesis, University of Kent, 2017. https://kar.kent.ac.uk/67108/.

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The Interacting Resonant Level Model (IRLM) is studied by making use of different standard techniques common to the study strongly correlated quantum systems. Exact results are computed both analytically and numerically, in order to obtain a full consistent theory of the model in equilibrium thermodynamics, opening the path towards a future treatment of the model.
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Mekareeya, Noppadol. "Exact results on moduli spaces of supersymmetric gauge theories." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/7077.

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In this thesis, certain exact results in supersymmetric gauge theories are discussed. In these theories, holomorphic gauge invariant operators play a central role in understanding the structure of the space of solutions to vacuum equations, known as the moduli space. We focus on a technique to count such operators with various quantum numbers. The counting can be done by computing a partition function, known as the Hilbert series, which counts all holomorphic gauge invariant operators carrying a speci ed set of global U(1) charges. The Hilbert series can be computed exactly for various gauge theories. In Part I of this thesis, we compute the Hilbert series of four dimensional N = 1 supersymmetric QCD with classical gauge groups. In part II, we count chiral operators on the one instanton moduli space on R4 and study the hypermultiplet moduli spaces of a large class of N = 2 supersymmetric gauge theories in four dimensions. We demonstrate that the Hilbert series not only contains information about the spectrum of operators in the theory, but it also carries geometrical properties of the moduli space, e.g. the dimension. It is also an indicator of whether the moduli space is Calabi-Yau. Moreover, Hilbert series can be used as a primary tool to test various dualities in gauge theories and in string theory.
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Okada, Takashi. "Matrix Models in String and M-theory and Exact Results." 京都大学 (Kyoto University), 2013. http://hdl.handle.net/2433/175112.

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Barranco, López Alejandro. "Applications of Supersymmetry: Exact Results, Gauge/Gravity Duality and Condensed Matter." Doctoral thesis, Universitat de Barcelona, 2014. http://hdl.handle.net/10803/284195.

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The study of supersymmetry has led us to a better understanding of field theories, specially in the strong coupling regime. In this thesis we have tried to show this through several examples. These are: - The first of these examples has been the application of localization techniques in supersymmetric theories. Specifically, we have used the partition function of N=2 supersymmetric Chern-Simons theory with gauge group U(N) and 2Nf flavors. To regularize the theory, it is necessary to make the computation in a three sphere whose radius, R, serves as an IR regulator which can be taken to infinity at the end of the computation. Once we have the exact partition function in terms of a matrix integral, we can solve the integral by means of a saddle-point approximation. This approximation becomes exact in the large N limit. The saddle-point equation can be solved exactly and in the decompactification limit it shows different phases depending on the value of the 't Hooft coupling. We have also computed the free energy and the vacuum expectation value of a Wilson loop for a big circle of the three sphere. Both of them show discontinuities in their derivatives, in particular, the discontinuity in the free energy appears in the third derivative and thus, both phase transitions are third order. - Other application that we have seen consists of the use of the gauge/gravity duality. In particular, starting from the gravity dual to N=1 super Yang-Mills, proposed by Maldacena and Núñez, we have reviewed how to add flavors (quarks) to this theory, without mass first and with mass later. We have also seen how to extract information about the field theory from these gravity duals, we have paid special attention to how the beta-function of the field theory dual is obtained from the gravity background proposed by Conde, Gaillard and Ramallo, dual to N=1 super Yang-Mills field theory with Nf massive flavors and a quartic superpotential. The main result from the point of view of the field theory is that, in the case Nf=2N, the beta-function shows a non-trivial UV fixed point, which hints on possible IR fixed point as proposed by Seiberg in the conformal window picture. No evidence of non-trivial fixed points is found for Nf different from 2N. - Again, in the context of the gauge/gravity duality, we have studied how to generate new supergravity solutions applying T-duality and how this affects the G-structures that describe the supersymmetry of these solutions. We have applied T-duality to the IIB supergravity solution of Klebanov and Witten with flavors. The supersymmetry of these backgrounds can be described by an SU(3)-structure and an SU(2)-structure before and after T-dualizing, respectively. - Finally, we have presented an N=1 supersymmetric model that exhibits a superconducting phase transition. This model is based on a quartic Kähler potential for a chiral multiplet and no superpotential. The main difference with standard superconductivity is that the phase transition becomes first order rather than second order. Another difference is that, as it is typical in supersymmetric theories, the dependence on the cut-off is softened in our model.
El estudio de supersimetría nos ha permitido un mejor entendimiento de las teorías de campos, especialmente en el régimen de acoplamiento fuerte. En esta tesis hemos tratado de mostrar esto a través de varios ejemplos. A saber: - Primero hemos mostrado cómo calcular de manera exacta con técnicas de localización la función de partición de la teoría de Chern-Simons supersimétrica N=2 con grupo gauge U(N) y 2Nf sabores en una tres esfera. Una vez que tenemos la función de partición exacta en términos de una integral de matrices, podemos resolverla por medio de la aproximación de punto silla. Esta aproximación se vuelve exacta cuando tomamos el límite de N grande. En el límite de descompactificación calculamos la energía libre y el valor de expectación de un lazo de Wilson correspondiente a un círculo máximo de la tres-esfera, mostrando transiciones de fase de tercer orden. - Otra aplicación ha consistido en el uso de la dualidad gravedad/gauge. Hemos revisado como construir una solución de supergravedad dual a la teoría N=1 super Yang-Mills con Nf sabores masivos y un superpotencial cuártico. El principal resultado desde el punto de vista de la teoría de campos que corresponde a dicha solución, consiste en que, en el caso Nf=2N, la función beta exhibe un punto fijo UV no trivial que da lugar a indicios acerca de un punto fijo IR adicional tal y como propone Seiberg en su propuesta de la ventana conforme. - También en el contexto de la dualidad gravedad/gauge hemos estudiado cómo generar nuevas soluciones de supergravedad por medio de la aplicación de T-dualidad a la solución de supergravedad de Klebanov y Witten con sabores. La supersimetría de estas soluciones pueden ser descritas en términos de una SU(3) estructura antes de T-dualizar, o una SU(2)-estructura, después de T-dualizar. - Finalmente, hemos presentado un modelo supersimétrico que exhibe una transición de fase superconductora basado en un potencial de Kähler cuártico para un multiplete quiral y sin superpotencial. Encontramos dos diferencias con superconductores usuales: nuestro modelo exhibe una transición de fase de primer orden, en lugar de ser de segundo orden, y la dependencia con la energía de corte es más suave.
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Mayer, Peter. "Glassy dynamics and effective temperatures : exact results for spin chain models." Thesis, King's College London (University of London), 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.407461.

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FANTONI, RICCARDO. "CLASSICAL LIQUIDS: EXACT RESULTS, INTEGRAL EQUATIONS THEORY, AND MONTE CARLO SIMULATIONS." Doctoral thesis, Università degli studi di Trieste, 2004. http://thesis2.sba.units.it/store/handle/item/12550.

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Books on the topic "Exact results"

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Lippi, Marco. Aggregation of simple linear dynamics: Exact asymptotic results. London: Suntory Centre, 1998.

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Filippi, Claudia. Generalized gradient approximations to density functional theory: Comparison with exact results. Ithaca, N.Y: Cornell Theory Center, Cornell University, 1996.

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Paulauskas, V. Approximation Theory in the Central Limit Theorem: Exact Results in Banach Spaces. Dordrecht: Springer Netherlands, 1989.

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Approximation theory in the central limit theorems--exact results in Banach spaces. Dordrecht, Netherlands: Kluwer Academic Publishers, 1989.

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Stochastic equations through the eye of the physicist: Basic concepts, exact results and asymptotic approximations. Amsterdam: Elsevier, 2005.

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Kli͡at͡skin, Valeriĭ Isaakovich. Stochastic equations through the eye of the physicist: Basic concepts, exact results and asymptotic approximations. Amsterdam: Elsevier, 2005.

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Manichev, Vladimir, Valentina Glazkova, and Кузьмина Анастасия. Numerical methods. The authentic and exact solution of the differential and algebraic equations in SAE systems of SAPR. ru: INFRA-M Academic Publishing LLC., 2016. http://dx.doi.org/10.12737/13138.

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In the manual classical numerical methods are considered and algorithms for the decision of systems of the ordinary differential equations (ODE), nonlinear and linear algebraic equations (NAU and LAU), and also ways of ensuring reliability and demanded accuracy of results of the decision. Ideas, which still not are stated are reflected in textbooks on calculus mathematics, namely: decision systems the ODE without reduction to a normal form of Cauchy resolved rather derivative, and refusal from any numerical an equivalent - nykh of transformations of the initial equations of mathematical models and is- the hodnykh of data because such transformations can change properties of models at a variation of coefficients in corresponding urav- neniyakh. It is intended for students, graduate students and teachers of higher education institutions in the direction of preparation "Informatics and computer facilities". The grant will also be useful for engineers and scientists on the corresponding specialties.
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Zvyagin, Andrei A. Finite Size Effects in Correlated Electron Models: Exact Results. Imperial College Press, 2005.

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Paulauskas, V., and A. Rackauskas. Approximation Theory in the Central Limit Theorem: Exact Results in Banach Spaces. Springer, 2012.

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Klyatskin, Valery I. Stochastic Equations through the Eye of the Physicist: Basic Concepts, Exact Results and Asymptotic Approximations. Elsevier Science, 2005.

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Book chapters on the topic "Exact results"

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Torquato, Salvatore. "Exact Results." In Interdisciplinary Applied Mathematics, 403–36. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-1-4757-6355-3_16.

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Lekner, John. "Exact results." In Theory of Reflection of Electromagnetic and Particle Waves, 33–60. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-015-7748-9_2.

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Lekner, John. "Exact Results." In Theory of Reflection, 41–73. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-23627-8_2.

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Abraham, D. B., and C. M. Newman. "Recent exact results on wetting." In Wetting Phenomena, 13–21. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/3-540-52338-3_2.

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Kraeft, Wolf-Dietrich, Dietrich Kremp, Werner Ebeling, and Gerd Röpke. "Physical Concepts and Exact Results." In Quantum Statistics of Charged Particle Systems, 4–21. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4613-2159-0_2.

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Lerche, Hans Rudolf. "Exact results about the shape." In Lecture Notes in Statistics, 110–29. New York, NY: Springer New York, 1986. http://dx.doi.org/10.1007/978-1-4615-6569-7_10.

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Walsh, Toby. "Parameterized Complexity Results in Symmetry Breaking." In Parameterized and Exact Computation, 4–13. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-17493-3_3.

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Stockhusen, Christoph, and Till Tantau. "Completeness Results for Parameterized Space Classes." In Parameterized and Exact Computation, 335–47. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-03898-8_28.

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Cai, Liming, and Xiuzhen Huang. "Fixed-Parameter Approximation: Conceptual Framework and Approximability Results." In Parameterized and Exact Computation, 96–108. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11847250_9.

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Heule, Marijn J. H., and Sicco Verwer. "Exact DFA Identification Using SAT Solvers." In Grammatical Inference: Theoretical Results and Applications, 66–79. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-15488-1_7.

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Conference papers on the topic "Exact results"

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Guan, Xi-Wen, Angela Foerster, Jon Links, and Huan-Qiang Zhou. "Exact results for BCS systems." In Workshop on Integrable Theories, Solitons and Duality. Trieste, Italy: Sissa Medialab, 2002. http://dx.doi.org/10.22323/1.008.0016.

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Pozdnyakov, N. S., A. A. Hasan, and V. S. Titov. "The effect of noise on image comparison results." In Scientific Trends: Questions of exact and technical sciences. ЦНК МОАН, 2019. http://dx.doi.org/10.18411/sciencepublic-12-10-2019-02.

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Shirayanagi, Kiyoshi, and Hiroshi Sekigawa. "Reducing exact computations to obtain exact results based on stabilization techniques." In the 2009 conference. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1577190.1577219.

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CHRIS EILBECK, J. "SOME EXACT RESULTS FOR QUANTUM LATTICE PROBLEMS." In Proceedings of the Third Conference. WORLD SCIENTIFIC, 2003. http://dx.doi.org/10.1142/9789812704627_0010.

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Kazakov, D. "Exact results in Softly Broken SUSY GaugeTheories." In Corfu Summer Institute on Elementary Particle Physics. Trieste, Italy: Sissa Medialab, 1999. http://dx.doi.org/10.22323/1.001.0048.

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Penati, Silvia. "Exact results in AdS$_4$/CFT$_3$." In Corfu Summer Institute 2019 "School and Workshops on Elementary Particle Physics and Gravity". Trieste, Italy: Sissa Medialab, 2020. http://dx.doi.org/10.22323/1.376.0161.

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Rukomojnikov, K. P., E. M. Carev, and S. E. Anisimov. "he results of experimental studies of wide-risk technology using a harvester and forwarder." In Scientific Trends: Questions of exact and technical sciences. ЦНК МОАН, 2019. http://dx.doi.org/10.18411/sciencepublic-12-07-2019-08.

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Latchman, H. A., and O. D. Crisalle. "Exact Nyquist-like stability results for ellipsoidal uncertainties." In Proceedings of SOUTHCON '94. IEEE, 1994. http://dx.doi.org/10.1109/southc.1994.498094.

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Guhr, Thomas. "Exact results for chaotic scattering and experimental validation." In PROCEEDINGS OF THE 43RD INTERNATIONAL CONFERENCE APPLICATIONS OF MATHEMATICS IN ENGINEERING AND ECONOMICS: (AMEE’17). Author(s), 2017. http://dx.doi.org/10.1063/1.5016129.

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Breuer, Melvin. "Hardware that produces bounded rather than exact results." In the 47th Design Automation Conference. New York, New York, USA: ACM Press, 2010. http://dx.doi.org/10.1145/1837274.1837493.

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Reports on the topic "Exact results"

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Blum, L., and D. A. Huckaby. Exact Results for the Structured Liquid-Solid Interface. Fort Belvoir, VA: Defense Technical Information Center, January 1991. http://dx.doi.org/10.21236/ada232992.

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Blum, L., and D. A. Huckaby. Exact Results for the Structured Liquid-Solid Interface. Fort Belvoir, VA: Defense Technical Information Center, April 1990. http://dx.doi.org/10.21236/ada222762.

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Nelson, Charles, and Richard Startz. Some Further Results on the Exact Small Sample Properties of the Instrumental Variable Estimator. Cambridge, MA: National Bureau of Economic Research, September 1988. http://dx.doi.org/10.3386/t0068.

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Apostolatos, A., R. Rossi, and C. Soriano. D7.2 Finalization of "deterministic" verification and validation tests. Scipedia, 2021. http://dx.doi.org/10.23967/exaqute.2021.2.006.

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This deliverable focus on the verification and validation of the solvers of Kratos Multiphysics which are used within ExaQUte. These solvers comprise standard body-fitted approaches and novel embedded approaches for the Computational Fluid Dynamics (CFD) simulations carried out within ExaQUte. Firstly, the standard body-fitted CFD solver is validated on a benchmark problem of high rise building - CAARC benchmark and subsequently the novel embedded CFD solver is verified against the solution of the body-fitted solver. Especially for the novel embedded approach, a workflow is presented on which the exact parameterized Computer-Aided Design (CAD) model is used in an efficient manner for the underlying CFD simulations. It includes: A note on the space-time methods Verification results for the body-fitted solver based on the CAARC benchmark Workflow consisting of importing an exact CAD model, tessellating it and performing embedded CFD on it Verification results for the embedded solver based on a high-rise building API definition and usage
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Gates, Allison, Michelle Gates, Shannon Sim, Sarah A. Elliott, Jennifer Pillay, and Lisa Hartling. Creating Efficiencies in the Extraction of Data From Randomized Trials: A Prospective Evaluation of a Machine Learning and Text Mining Tool. Agency for Healthcare Research and Quality (AHRQ), August 2021. http://dx.doi.org/10.23970/ahrqepcmethodscreatingefficiencies.

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Background. Machine learning tools that semi-automate data extraction may create efficiencies in systematic review production. We prospectively evaluated an online machine learning and text mining tool’s ability to (a) automatically extract data elements from randomized trials, and (b) save time compared with manual extraction and verification. Methods. For 75 randomized trials published in 2017, we manually extracted and verified data for 21 unique data elements. We uploaded the randomized trials to ExaCT, an online machine learning and text mining tool, and quantified performance by evaluating the tool’s ability to identify the reporting of data elements (reported or not reported), and the relevance of the extracted sentences, fragments, and overall solutions. For each randomized trial, we measured the time to complete manual extraction and verification, and to review and amend the data extracted by ExaCT (simulating semi-automated data extraction). We summarized the relevance of the extractions for each data element using counts and proportions, and calculated the median and interquartile range (IQR) across data elements. We calculated the median (IQR) time for manual and semiautomated data extraction, and overall time savings. Results. The tool identified the reporting (reported or not reported) of data elements with median (IQR) 91 percent (75% to 99%) accuracy. Performance was perfect for four data elements: eligibility criteria, enrolment end date, control arm, and primary outcome(s). Among the top five sentences for each data element at least one sentence was relevant in a median (IQR) 88 percent (83% to 99%) of cases. Performance was perfect for four data elements: funding number, registration number, enrolment start date, and route of administration. Among a median (IQR) 90 percent (86% to 96%) of relevant sentences, pertinent fragments had been highlighted by the system; exact matches were unreliable (median (IQR) 52 percent [32% to 73%]). A median 48 percent of solutions were fully correct, but performance varied greatly across data elements (IQR 21% to 71%). Using ExaCT to assist the first reviewer resulted in a modest time savings compared with manual extraction by a single reviewer (17.9 vs. 21.6 hours total extraction time across 75 randomized trials). Conclusions. Using ExaCT to assist with data extraction resulted in modest gains in efficiency compared with manual extraction. The tool was reliable for identifying the reporting of most data elements. The tool’s ability to identify at least one relevant sentence and highlight pertinent fragments was generally good, but changes to sentence selection and/or highlighting were often required.
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Renaud, Alexander, Michael Forte, Nicholas Spore, Brittany Bruder, Katherine Brodie, Jessamin Straub, and Jeffrey Ruby. Evaluation of Unmanned Aircraft Systems for flood risk management : results of terrain and structure assessments. Engineer Research and Development Center (U.S.), August 2022. http://dx.doi.org/10.21079/11681/45000.

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The 2017 Duck Unmanned Aircraft Systems (UAS) Pilot Experiment was conducted by the US Army Engineer Research and Development Center (ERDC), Coastal and Hydraulics Laboratory, Field Research Facility (FRF), to assess the potential for different UAS to support US Army Corps of Engineers coastal and flood risk management. By involving participants from multiple ERDC laboratories, federal agencies, academia, and private industry, the work unit leads were able to leverage assets, resources, and expertise to assess data from multiple UAS. This report compares datasets from several UAS to assess their potential to survey and observe coastal terrain and structures. In this report, UAS data product accuracy was analyzed within the context of three potential applications: (1) general coastal terrain survey accuracy across the FRF property; (2) small-scale feature detection and observation within the experiment infrastructure area; and (3) accuracy for surveying coastal foredunes. The report concludes by presenting tradeoffs between UAS accuracy and the cost to operate to aid in selection of the best UAS for a particular task. While the technology and exact UAS models vary through time, the lessons learned from this study illustrate that UAS are available at a variety of costs to satisfy varying coastal management data needs.
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Bauer, Andrew, Jennifer Abras, and Nathan Hariharan. In situ and post-processing volume rendering with with Cinema. Engineer Research and Development Center (U.S.), May 2021. http://dx.doi.org/10.21079/11681/40502.

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We present a new batch volume rendering technique which alleviates the time and expertise needed by the domain scientist in order to produce quality volume rendered results. This process can be done both in situ and as a post-processing step. The advantage of performing this as an in situ process is that the user is not required to have a priori knowledge of the exact physics and how best to create a transfer function to volume render that physics during the in situ run. For the post-processing use case, the user has the ability to easily examine a wide variety of transfer functions without the tedious work of manually generating each one.
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Miller, Allen R., and Emanuel Vegh. Exact Result for the Grazing Angle of Specular Reflection from a Sphere. Fort Belvoir, VA: Defense Technical Information Center, August 1991. http://dx.doi.org/10.21236/ada239578.

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Bonatti, Piero, Carsten Lutz, and Frank Wolter. Expressive Non-Monotonic Description Logics Based on Circumscription. Technische Universität Dresden, 2005. http://dx.doi.org/10.25368/2022.149.

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Recent applications of description logics (DLs) strongly suggest the integration of non-monotonic features into DLs, with particular attention to defeasible inheritance. However, the existing non-monotonic extensions of DLs are usually based on default logic or autoepistemic logic, and have to be seriously restricted in expressive power to preserve the decidability of reasoning. In particular, such DLs allow the modelling of defeasible inheritance only in a very restricted form, where non-monotonic reasoning is limited to individuals that are explicitly identified by constants in the knowledge base. In this paper, we consider non-monotonic extensions of expressive DLs based on circumscription. We prove that reasoning in such DLs is decidable even without the usual, strong restrictions in expressive power. We pinpoint the exact computational complexity of reasoning as complete for NPNEXP and NEXPNP, depending on whether or not the number of minimized and fixed predicates is assumed to be bounded by a constant. These results assume that only concept names (and no role names) can be minimized and fixed during minimization. On the other hand, we show that fixing role names during minimization makes reasoning undecidable.
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Wang, Qing, Zi-Xu Wang, Nasu M. Otomi, and Shinji Mine. Association between cutoffs for classifying high- and low-volume hospitals and long-term survival after eophagectomy: A systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, July 2022. http://dx.doi.org/10.37766/inplasy2022.7.0023.

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Review question / Objective: It is still unclear about the association between cutoffs for classifying high- and low-volume hospitals and long-term survival after esophagectomy for patients with esophageal cancer. Condition being studied: It remains controversial whether size of hospital volume influences long-term survival outcomes for patients with esophageal cancer after esophagectomy. In addition, there is still no consensus for defining a reasonable cutoff of esophagectomies per year for classifying high- and low-volume hospitals. Information sources: After the retrieval of the relevant articles, they were screened to remove the duplicates. Search results were screened by two authors (Q.W. and Z.X.W.) independently according to the titles and abstracts. Next, the retained studies were searched for their full text and further were screened according to the following criteria: surgery for esophageal carcinoma as the theme; primary outcomes included hospital volume and long-term OS; comparison of OS between high- and low-volume hospitals; original articles with informative data; articles reporting adjusted hazard ratios (HRs) in multi-variate analysis; and articles in which procedural volume was an exact cutoff. Any disagreements were resolved through consultation with the third author.
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