Academic literature on the topic 'Hadamard spaces'
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Journal articles on the topic "Hadamard spaces":
Moslemipour, Ali, Mehdi Roohi, Mohammad Mardanbeigi, and Mahdi Azhini. "Monotone relations in Hadamard spaces." Filomat 33, no. 19 (2019): 6347–58. http://dx.doi.org/10.2298/fil1919347m.
LANG, U., and V. SCHROEDER. "Quasiflats in Hadamard spaces." Annales Scientifiques de l’École Normale Supérieure 30, no. 3 (1997): 339–52. http://dx.doi.org/10.1016/s0012-9593(97)89923-5.
Hirayama, Michihiro. "Entropy of Hadamard spaces." Topology and its Applications 158, no. 4 (March 2011): 627–35. http://dx.doi.org/10.1016/j.topol.2010.12.011.
Yakhshiboyev, M. U. "On Boundedness of Fractional Hadamard Integration and Hadamard-Type Integration in LebesgueSpaces with Mixed Norm." Contemporary Mathematics. Fundamental Directions 68, no. 1 (April 20, 2022): 178–89. http://dx.doi.org/10.22363/2413-3639-2022-68-1-178-189.
Yakhshiboyev, M. U. "On Boundedness of Fractional Hadamard Integration and Hadamard-Type Integration in LebesgueSpaces with Mixed Norm." Contemporary Mathematics. Fundamental Directions 68, no. 1 (April 20, 2022): 178–89. http://dx.doi.org/10.22363/2413-3639-2022-68-1-178-189.
Berdellima, Arian. "On a weak topology for Hadamard spaces." Sbornik: Mathematics 214, no. 10 (2023): 1373–89. http://dx.doi.org/10.4213/sm9808e.
Wulan, Hasi, and Yanhua Zhang. "Hadamard products and QK spaces." Journal of Mathematical Analysis and Applications 337, no. 2 (January 2008): 1142–50. http://dx.doi.org/10.1016/j.jmaa.2007.04.020.
Bocci, Cristiano, Enrico Carlini, and Joe Kileel. "Hadamard products of linear spaces." Journal of Algebra 448 (February 2016): 595–617. http://dx.doi.org/10.1016/j.jalgebra.2015.10.008.
Pavlović, Miroslav. "Hadamard product in Qp spaces." Journal of Mathematical Analysis and Applications 305, no. 2 (May 2005): 589–98. http://dx.doi.org/10.1016/j.jmaa.2004.12.040.
Alexander, Stephanie B., and Richard L. Bishop. "Warped products of Hadamard spaces." manuscripta mathematica 96, no. 4 (August 1, 1998): 487–505. http://dx.doi.org/10.1007/s002290050078.
Dissertations / Theses on the topic "Hadamard spaces":
Bërdëllima, Arian [Verfasser]. "Investigations in Hadamard spaces / Arian Bërdëllima." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2021. http://nbn-resolving.de/urn:nbn:de:gbv:7-21.11130/00-1735-0000-0008-58F4-2-2.
Balser, Andreas. "On the Interplay between the Tits Boundary and the Interior of Hadamard Spaces." Diss., lmu, 2006. http://nbn-resolving.de/urn:nbn:de:bvb:19-59715.
Lorson, Tobias [Verfasser], and Jürgen [Akademischer Betreuer] Müller. "Hadamard convolution operators on spaces of holomorphic functions / Tobias Lorson ; Betreuer: Jürgen Müller." Trier : Universität Trier, 2014. http://d-nb.info/1197699708/34.
Montag, Martin J. [Verfasser], and Gabriele [Akademischer Betreuer] Steidl. "Convex Analysis for Processing Hyperspectral Images and Data from Hadamard Spaces / Martin J. Montag ; Betreuer: Gabriele Steidl." Kaiserslautern : Technische Universität Kaiserslautern, 2017. http://d-nb.info/1132582199/34.
Jerhaoui, Othmane. "Viscosity theory of first order Hamilton Jacobi equations in some metric spaces." Electronic Thesis or Diss., Institut polytechnique de Paris, 2022. http://www.theses.fr/2022IPPAE016.
The main subject of this thesis is the study first order Hamilton Jacobi equations posed in certain classes of metric spaces. Furthermore, the Hamiltonian of these equations can potentially present some structured discontinuities.In the first part of this thesis, we study a discontinuous first order Hamilton Jacobi Bellman equation defined on a stratification of R^N. The latter is a finite and disjoint union of smooth submanifolds of R^N called the the subdomains of R^N. On each subdomain, a continuous Hamiltonian is defined on it, However the global Hamiltonian in R^N presents discontinuities once one goes from one subdomain to the other. We give an optimal control interpretation of this problem and we use nonsmooth analysis techniques to prove that the value function is the unique viscosity solution to the discontinuous Hamilton Jacobi Bellman equation in this setting. The uniqueness of the solution is guaranteed by means of a strong comparison principle valid for any lower semicontinuous supersolution and any upper semicontinuous subsolution. As far as existence of the solution is concerned, we use the dynamic programming principle verified by the value function to prove that it is a viscosity solution of the discontinuous Hamilton Jacobi equation. Moreover, we prove some stability results in the presence of perturbations on the discontinuous Hamiltonian. Finally, by virtue of the comparison principle, we prove a general convergence result of monotone numerical schemes approximating this problem.The second part of this thesis is concerned with defining a novel notion of viscosity for first order Hamilton Jacobi equations defined in proper CAT(0) spaces. A metric space is said to be a CAT(0) space if, roughly speaking, it is a geodesic space and its geodesic triangles are "thinner" than the triangles of the Euclidean plane. They can be seen as a generalization of Hilbert spaces or Hadamard manifolds. Typical examples of CAT(0) spaces include Hilbert spaces, metric trees and networks obtained by gluing a finite number of half-spaces along their common boundary. We exploit the additional structure that these spaces enjoy to study stationary and time-dependent first order Hamilton-Jacobi equation in them. In particular, we want to recover the main features of viscosity theory: the comparison principle and Perron's method}.We define the notion of viscosity using test functions that are Lipschitz and can be represented as a difference of two semiconvex function. We show that this new notion of viscosity coincides with the classical one in R^N by studying the examples of Hamilton Jacobi Bellman and Hamilton Jacobi Isaacs' equations. Furthermore, we prove existence and uniqueness of the solution of Eikonal type equations posed in networks that can result from gluing half-spaces of different Hausdorff dimension.In the third part of this thesis, we study a Mayer optimal control problem on the space of Borel probability measures over a compact Riemannian manifold M. This is motivated by certain situations where a central planner of a deterministic controlled system has only imperfect information on the initial state of the system. The lack of information here is very specific. It is described by a Borel probability measure along which the initial state is distributed. We define the new notion of viscosity in this space in a similar manner as in the previous part by taking test functions that are Lipschitz and can be written as a difference of two semiconvex functions. With this choice of test functions, we extend the notion of viscosity to Hamilton Jacobi Bellman equations in Wasserstein spaces and we establish that the value function is the unique viscosity solution of a Hamilton Jacobi Bellman equation in the Wasserstein space over M
Cacais, Nieto Félix. "Compactificações diferenciáveis em espaços simétricos de tipo não compacto." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/159602.
In this dissertation we will study some results proposed by Benoit Kloe kner [Kl2] in his do toral thesis. We mainly present the proof of non-existen e of diferentiable Hadamard compactific ations in symmetric spaces of non compact type of rank ≥ 2.
LIU, Jia-Qian, and 劉家騫. "Viscosity approximations with contractions in Hadamard spaces." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/83306164480387552879.
國立東華大學
應用數學系
104
In this thesis, I study Moudafi viscosity approximations from the paper [S. Huang, Viscosity approximations with weak contractions in geodesic metric spaces of nonpositive curvature, Journal of Nonlinear and Convex Analysis, 2016] under the supervision of my advisor, Professor Shuechin Huang. We first establish the results about Browder and Halpern type convergence theorems and then extend those results to Moudafi viscosity approximations by invoking NST conditions in a CAT(0) space. We also use matlab to plot the graphs of some examples over main theorems in the Euclidean space.
Kikianty, Eder. "Hermite-Hadamard inequality in the geometry of banach spaces." Thesis, 2010. https://vuir.vu.edu.au/15793/.
Balser, Andreas [Verfasser]. "On the interplay between the Tits boundary and the interior of Hadamard spaces / von Andreas Balser." 2006. http://d-nb.info/981950485/34.
Wrochna, Michal. "Singularities of two-point functions in Quantum Field Theory." Doctoral thesis, 2013. http://hdl.handle.net/11858/00-1735-0000-0001-BB3C-E.
Books on the topic "Hadamard spaces":
Bačák, Miroslav. Convex analysis and optimization in Hadamard spaces. Berlin: Walter de Gruyter GmbH & Co. KG, 2014.
Bacak, Miroslav. Convex Analysis and Optimization in Hadamard Spaces. de Gruyter GmbH, Walter, 2014.
Bacak, Miroslav. Convex Analysis and Optimization in Hadamard Spaces. de Gruyter GmbH, Walter, 2014.
Book chapters on the topic "Hadamard spaces":
Guirao, Antonio José, Vicente Montesinos, and Václav Zizler. "Weak Hadamard differentiability." In Renormings in Banach Spaces, 373–76. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-08655-7_35.
Roth, Ron M. "Spectral-null codes and null spaces of Hadamard submatrices." In Algebraic Coding, 141–53. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/3-540-57843-9_15.
Abbas, Saïd, Mouffak Benchohra, and Johnny Henderson. "Partial Hadamard-Stieltjes Fractional Integral Equations in Banach Spaces." In Advances in Nonlinear Analysis via the Concept of Measure of Noncompactness, 375–91. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3722-1_9.
Kimura, Yasunori. "The Shrinking Projection Method and Resolvents on Hadamard Spaces." In Indian Statistical Institute Series, 131–39. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-3059-9_7.
Vedel, Yana, and Vladimir Semenov. "Adaptive Extraproximal Algorithm for the Equilibrium Problem in Hadamard Spaces." In Optimization and Applications, 287–300. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-62867-3_21.
Tupker, Quinten, Salem Said, and Cyrus Mostajeran. "Online Learning of Riemannian Hidden Markov Models in Homogeneous Hadamard Spaces." In Lecture Notes in Computer Science, 37–44. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-80209-7_5.
Suryawanshi, Vaishali, Tanuja Sarode, Nimit Jhunjhunwala, and Hamza Khan. "Evaluating Image Data Augmentation Technique Utilizing Hadamard Walsh Space for Image Classification." In Proceedings in Adaptation, Learning and Optimization, 290–301. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-31164-2_24.
Kaaviya, Ponharieesh Krishnakumar, Rajakumaran Jayaraman, and Sakthi Dinesh Pounraj. "Texture Segmentation Using Gabor Filter And hadamard Transform With Small Space Analysis, Texture Frequency, Non-Linear Filtering, And Postprocessing." In Advances in Computer Science Research, 101–7. Dordrecht: Atlantis Press International BV, 2023. http://dx.doi.org/10.2991/978-94-6463-250-7_19.
"7 Probabilistic tools in Hadamard spaces." In Convex Analysis and Optimization in Hadamard Spaces, 139–57. De Gruyter, 2014. http://dx.doi.org/10.1515/9783110361629.139.
"3 Weak convergence in Hadamard spaces." In Convex Analysis and Optimization in Hadamard Spaces, 58–68. De Gruyter, 2014. http://dx.doi.org/10.1515/9783110361629.58.
Conference papers on the topic "Hadamard spaces":
"Hadamard type operators in spaces of holomorphic functions." In Уфимская осенняя математическая школа - 2022. Т.1. Baskir State University, 2022. http://dx.doi.org/10.33184/mnkuomsh1t-2022-09-28.40.
Mendel, Manor, and Assaf Naor. "Expanders with respect to Hadamard spaces and random graphs." In ITCS'14: Innovations in Theoretical Computer Science. New York, NY, USA: ACM, 2014. http://dx.doi.org/10.1145/2554797.2554829.
Chen, Yi-chao, and Lewis T. Wheeler. "Stability of Elastic Half-Spaces by an Energy Method." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0941.
Zhu, Guijing, Long Ma, Xin Fan, and Risheng Liu. "Hierarchical Bilevel Learning with Architecture and Loss Search for Hadamard-based Image Restoration." In Thirty-First International Joint Conference on Artificial Intelligence {IJCAI-22}. California: International Joint Conferences on Artificial Intelligence Organization, 2022. http://dx.doi.org/10.24963/ijcai.2022/245.
Ouyang, Xing, Guiyue Jin, Jiyu Jin, and Zhisen Wang. "Walsh-Hadamard-Fourier transform based OFDM with space-multipath diversity." In TENCON 2013 - 2013 IEEE Region 10 Conference. IEEE, 2013. http://dx.doi.org/10.1109/tencon.2013.6718853.
Baro, Mohan, and Jacek Ilow. "Space-Time Block Codes Based on Diagonalized Walsh-Hadamard Transform with Simple Decoupling." In 2010 IEEE Vehicular Technology Conference (VTC 2010-Fall). IEEE, 2010. http://dx.doi.org/10.1109/vetecf.2010.5594147.
Elganimi, Taissir Y., and Marwan B. Elkhoja. "Improved Orthogonal Space-Time Block Codes with Multiple Transmit Antennas Using Hadamard Transform." In 2019 6th International Conference on Electrical and Electronics Engineering (ICEEE). IEEE, 2019. http://dx.doi.org/10.1109/iceee2019.2019.00040.
Burrell, Derek J., and Christopher T. Middlebrook. "Performance analysis of stationary Hadamard matrix diffusers in free-space optical communication links." In Laser Communication and Propagation through the Atmosphere and Oceans VI, edited by Alexander M. van Eijk, Stephen M. Hammel, and Jeremy P. Bos. SPIE, 2017. http://dx.doi.org/10.1117/12.2273554.
Porto, M. S., T. L. da Silva, R. E. C. Porto, L. V. Agostini, I. V. da Silva, and S. Bampi. "Design space exploration on the H.264 4/spl times/4 Hadamard transform." In 2005 NORCHIP. IEEE, 2005. http://dx.doi.org/10.1109/norchp.2005.1597021.
Zhu, Jie, Han Hai, Shuai Wang, and Ping Wang. "A Novel Generalized Butson-type Hadamard Matrix-Aided Space Shift Keying Modulation Scheme." In 2019 IEEE 2nd International Conference on Automation, Electronics and Electrical Engineering (AUTEEE). IEEE, 2019. http://dx.doi.org/10.1109/auteee48671.2019.9033387.