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Articles de revues sur le sujet « Irreducible holomorphic symplectic manifolds »

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Auteur : Grafiati
Publié le 8 juin 2024

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1

Camere, Chiara. « Lattice polarized irreducible holomorphic symplectic manifolds ». Annales de l’institut Fourier 66, no 2 (2016) : 687–709. http://dx.doi.org/10.5802/aif.3022.

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2

Boissière, Samuel, Marc Nieper-Wißkirchen et Alessandra Sarti. « Smith theory and irreducible holomorphic symplectic manifolds ». Journal of Topology 6, no 2 (13 février 2013) : 361–90. http://dx.doi.org/10.1112/jtopol/jtt002.

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3

Franco, Emilio, Marcos Jardim et Grégoire Menet. « Brane involutions on irreducible holomorphic symplectic manifolds ». Kyoto Journal of Mathematics 59, no 1 (avril 2019) : 195–235. http://dx.doi.org/10.1215/21562261-2018-0009.

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4

Braverman, Maxim. « Symplectic cutting of Kähler manifolds ». Journal für die reine und angewandte Mathematik (Crelles Journal) 1999, no 508 (12 mars 1999) : 85–98. http://dx.doi.org/10.1515/crll.1999.508.85.

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Abstract We obtain estimates on the character of the cohomology of an S1-equivariant holomorphic vector bundle over a Kähler manifold M in terms of the cohomology of the Lerman symplectic cuts and the symplectic reduction of M. In particular, we prove and extend inequalities conjectured by Wu and Zhang. The proof is based on constructing a flat family of complex spaces Mt (t ∈ ℂ) such that Mt is isomorphic to M for t ≠ 0, while M0 is a singular reducible complex space, whose irreducible components are the Lerman symplectic cuts.
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5

Camere, Chiara. « Some remarks on moduli spaces of lattice polarized holomorphic symplectic manifolds ». Communications in Contemporary Mathematics 20, no 04 (20 mai 2018) : 1750044. http://dx.doi.org/10.1142/s0219199717500444.

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We construct quasi-projective moduli spaces of [Formula: see text]-general lattice polarized irreducible holomorphic symplectic manifolds. Moreover, we study their Baily–Borel compactification and investigate a relation between one-dimensional boundary components and equivalence classes of rational Lagrangian fibrations defined on mirror manifolds.
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6

Amerik, Ekaterina, et Misha Verbitsky. « Construction of automorphisms of hyperkähler manifolds ». Compositio Mathematica 153, no 8 (31 mai 2017) : 1610–21. http://dx.doi.org/10.1112/s0010437x17007138.

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Let $M$ be an irreducible holomorphic symplectic (hyperkähler) manifold. If $b_{2}(M)\geqslant 5$, we construct a deformation $M^{\prime }$ of $M$ which admits a symplectic automorphism of infinite order. This automorphism is hyperbolic, that is, its action on the space of real $(1,1)$-classes is hyperbolic. If $b_{2}(M)\geqslant 14$, similarly, we construct a deformation which admits a parabolic automorphism (and many other automorphisms as well).
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7

Brecan, Ana-Maria, Tim Kirschner et Martin Schwald. « Unobstructedness of hyperkähler twistor spaces ». Mathematische Zeitschrift 300, no 3 (6 octobre 2021) : 2485–517. http://dx.doi.org/10.1007/s00209-021-02841-4.

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AbstractA family of irreducible holomorphic symplectic (ihs) manifolds over the complex projective line has unobstructed deformations if its period map is an embedding. This applies in particular to twistor spaces of ihs manifolds. Moreover, a family of ihs manifolds over a subspace of the period domain extends to a universal family over an open neighborhood in the period domain.
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8

Camere, Chiara, Grzegorz Kapustka, Michał Kapustka et Giovanni Mongardi. « Verra Four-Folds, Twisted Sheaves, and the Last Involution ». International Mathematics Research Notices 2019, no 21 (1 février 2018) : 6661–710. http://dx.doi.org/10.1093/imrn/rnx327.

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Abstract We study the geometry of some moduli spaces of twisted sheaves on K3 surfaces. In particular we introduce induced automorphisms from a K3 surface on moduli spaces of twisted sheaves on this K3 surface. As an application we prove the unirationality of moduli spaces of irreducible holomorphic symplectic manifolds of K3[2]-type admitting non-symplectic involutions with invariant lattices U(2) ⊕ D4(−1) or U(2) ⊕ E8(−2). This complements the results obtained in [43], [13], and the results from [29] about the geometry of irreducible holomorphic symplectic (IHS) four-folds constructed using the Hilbert scheme of (1, 1) conics on Verra four-folds. As a byproduct we find that IHS four-folds of K3[2]-type with Picard lattice U(2) ⊕ E8(−2) naturally contain non-nodal Enriques surfaces.
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9

Golla, Marco, et Laura Starkston. « The symplectic isotopy problem for rational cuspidal curves ». Compositio Mathematica 158, no 7 (juillet 2022) : 1595–682. http://dx.doi.org/10.1112/s0010437x2200762x.

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We define a suitably tame class of singular symplectic curves in 4-manifolds, namely those whose singularities are modeled on complex curve singularities. We study the corresponding symplectic isotopy problem, with a focus on rational curves with irreducible singularities (rational cuspidal curves) in the complex projective plane. We prove that every such curve is isotopic to a complex curve in degrees up to five, and for curves with one singularity whose link is a torus knot. Classification results of symplectic isotopy classes rely on pseudo-holomorphic curves together with a symplectic version of birational geometry of log pairs and techniques from four-dimensional topology.
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10

Knutsen, Andreas Leopold, Margherita Lelli-Chiesa et Giovanni Mongardi. « Wall divisors and algebraically coisotropic subvarieties of irreducible holomorphic symplectic manifolds ». Transactions of the American Mathematical Society 371, no 2 (20 septembre 2018) : 1403–38. http://dx.doi.org/10.1090/tran/7340.

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11

Lo Bianco, Federico. « On the Primitivity of Birational Transformations of Irreducible Holomorphic Symplectic Manifolds ». International Mathematics Research Notices 2019, no 1 (16 juin 2017) : 1–32. http://dx.doi.org/10.1093/imrn/rnx109.

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12

Mongardi, Giovanni, Antonio Rapagnetta et Giulia Saccà. « The Hodge diamond of O’Grady’s six-dimensional example ». Compositio Mathematica 154, no 5 (21 mars 2018) : 984–1013. http://dx.doi.org/10.1112/s0010437x1700803x.

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We realize O’Grady’s six-dimensional example of an irreducible holomorphic symplectic (IHS) manifold as a quotient of an IHS manifold of$\text{K3}^{[3]}$type by a birational involution, thereby computing its Hodge numbers.
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13

Iliev, Atanas, Grzegorz Kapustka, Michał Kapustka et Kristian Ranestad. « EPW cubes ». Journal für die reine und angewandte Mathematik (Crelles Journal) 2019, no 748 (1 mars 2019) : 241–68. http://dx.doi.org/10.1515/crelle-2016-0044.

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Abstract We construct a new 20-dimensional family of projective six-dimensional irreducible holomorphic symplectic manifolds. The elements of this family are deformation equivalent with the Hilbert scheme of three points on a K3 surface and are constructed as natural double covers of special codimension-three subvarieties of the Grassmannian G(3,6) . These codimension-three subvarieties are defined as Lagrangian degeneracy loci and their construction is parallel to that of EPW sextics, we call them the EPW cubes. As a consequence we prove that the moduli space of polarized IHS sixfolds of K3 -type, Beauville–Bogomolov degree 4 and divisibility 2 is unirational.
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14

Ouchi, Genki. « Lagrangian embeddings of cubic fourfolds containing a plane ». Compositio Mathematica 153, no 5 (23 mars 2017) : 947–72. http://dx.doi.org/10.1112/s0010437x16008307.

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We prove that a very general smooth cubic fourfold containing a plane can be embedded into an irreducible holomorphic symplectic eightfold as a Lagrangian submanifold. We construct the desired irreducible holomorphic symplectic eightfold as a moduli space of Bridgeland stable objects in the derived category of the twisted K3 surface corresponding to the cubic fourfold containing a plane.
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15

Zehmisch, Kai. « Holomorphic jets in symplectic manifolds ». Journal of Fixed Point Theory and Applications 17, no 2 (5 août 2014) : 379–402. http://dx.doi.org/10.1007/s11784-014-0178-z.

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16

Mongardi, Giovanni, et John Christian Ottem. « Curve classes on irreducible holomorphic symplectic varieties ». Communications in Contemporary Mathematics 22, no 07 (15 novembre 2019) : 1950078. http://dx.doi.org/10.1142/s0219199719500780.

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We prove that the integral Hodge conjecture holds for 1-cycles on irreducible holomorphic symplectic varieties of [Formula: see text]-type and of generalized Kummer type. As an application, we give a new proof of the integral Hodge conjecture for cubic fourfolds.
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17

Mongardi, G., et M. Wandel. « Induced automorphisms on irreducible symplectic manifolds : ». Journal of the London Mathematical Society 92, no 1 (27 mai 2015) : 123–43. http://dx.doi.org/10.1112/jlms/jdv012.

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18

Gritsenko, V., K. Hulek et G. K. Sankaran. « Moduli spaces of irreducible symplectic manifolds ». Compositio Mathematica 146, no 2 (26 janvier 2010) : 404–34. http://dx.doi.org/10.1112/s0010437x0900445x.

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AbstractWe study the moduli spaces of polarised irreducible symplectic manifolds. By a comparison with locally symmetric varieties of orthogonal type of dimension 20, we show that the moduli space of polarised deformation K3[2]manifolds with polarisation of degree 2dand split type is of general type ifd≥12.
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19

Beauville, Arnaud. « Antisymplectic involutions of holomorphic symplectic manifolds ». Journal of Topology 4, no 2 (2011) : 300–304. http://dx.doi.org/10.1112/jtopol/jtr002.

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20

Gromov, M. « Pseudo holomorphic curves in symplectic manifolds ». Inventiones Mathematicae 82, no 2 (juin 1985) : 307–47. http://dx.doi.org/10.1007/bf01388806.

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21

Broka, Damien, et Ping Xu. « Symplectic realizations of holomorphic Poisson manifolds ». Mathematical Research Letters 29, no 4 (2022) : 903–44. http://dx.doi.org/10.4310/mrl.2022.v29.n4.a1.

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22

Charles, François, Giovanni Mongardi et Gianluca Pacienza. « Families of rational curves on holomorphic symplectic varieties and applications to 0-cycles ». Compositio Mathematica 160, no 2 (18 décembre 2023) : 288–316. http://dx.doi.org/10.1112/s0010437x20007526.

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We study families of rational curves on irreducible holomorphic symplectic varieties. We give a necessary and sufficient condition for a sufficiently ample linear system on a holomorphic symplectic variety of $K3^{[n]}$ -type to contain a uniruled divisor covered by rational curves of primitive class. In particular, for any fixed $n$ , we show that there are only finitely many polarization types of holomorphic symplectic variety of $K3^{[n]}$ -type that do not contain such a uniruled divisor. As an application, we provide a generalization of a result due to Beauville–Voisin on the Chow group of $0$ -cycles on such varieties.
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23

Hwang, Jun-Muk. « Base manifolds for fibrations of projective irreducible symplectic manifolds ». Inventiones mathematicae 174, no 3 (12 août 2008) : 625–44. http://dx.doi.org/10.1007/s00222-008-0143-9.

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24

Mongardi, Giovanni. « On the monodromy of irreducible symplectic manifolds ». Algebraic Geometry 3, no 3 (15 mai 2016) : 385–91. http://dx.doi.org/10.14231/ag-2016-017.

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25

Ran, Ziv. « Deformations of holomorphic pseudo-symplectic Poisson manifolds ». Advances in Mathematics 304 (janvier 2017) : 1156–75. http://dx.doi.org/10.1016/j.aim.2016.09.016.

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26

Hassett, Brendan, et Yuri Tschinkel. « Flops on holomorphic symplectic fourfolds and determinantal cubic hypersurfaces ». Journal of the Institute of Mathematics of Jussieu 9, no 1 (11 août 2009) : 125–53. http://dx.doi.org/10.1017/s1474748009000140.

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AbstractWe study the birational geometry of irreducible holomorphic symplectic varieties arising as varieties of lines of general cubic fourfolds containing a cubic scroll. We compute the ample and moving cones, and exhibit a birational automorphism of infinite order explaining the chamber decomposition of the moving cone.
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27

Matsushita, Daisuke. « On nef reductions of projective irreducible symplectic manifolds ». Mathematische Zeitschrift 258, no 2 (21 avril 2007) : 267–70. http://dx.doi.org/10.1007/s00209-007-0160-1.

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28

Ye, Rugang. « Filling by holomorphic curves in symplectic 4-manifolds ». Transactions of the American Mathematical Society 350, no 1 (1998) : 213–50. http://dx.doi.org/10.1090/s0002-9947-98-01970-9.

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29

O’Grady, K. G. « Involutions and linear systems on holomorphic symplectic manifolds ». GAFA Geometric And Functional Analysis 15, no 6 (25 novembre 2005) : 1223–74. http://dx.doi.org/10.1007/s00039-005-0538-3.

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30

Matsushita, Daisuke. « Equidimensionality of Lagrangian fibrations on holomorphic symplectic manifolds ». Mathematical Research Letters 7, no 4 (2000) : 389–91. http://dx.doi.org/10.4310/mrl.2000.v7.n4.a4.

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31

Lehn, Christian. « Deformations of Lagrangian subvarieties of holomorphic symplectic manifolds ». Mathematical Research Letters 23, no 2 (2016) : 473–97. http://dx.doi.org/10.4310/mrl.2016.v23.n2.a9.

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32

Polterovich, Leonid. « Symplectic displacement energy for Lagrangian submanifolds ». Ergodic Theory and Dynamical Systems 13, no 2 (juin 1993) : 357–67. http://dx.doi.org/10.1017/s0143385700007410.

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AbstractRecently H. Hofer defined a new symplectic invariant which has a beautiful dynamical meaning. In the present paper we study this invariant for Lagrangian submanifolds of symplectic manifolds. Our approach is based on Gromov's theory of pseudo-holomorphic curves.
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33

HIND, R. « STEIN FILLINGS OF LENS SPACES ». Communications in Contemporary Mathematics 05, no 06 (décembre 2003) : 967–82. http://dx.doi.org/10.1142/s0219199703001178.

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We describe a foliation by finite energy holomorphic curves of some symplectic manifolds which are constructed from Stein manifolds with Lens space boundaries. One application is that all such Stein manifolds bounded by the same contact Lens space are equivalent up to Stein homotopy.
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34

DUISTERMAAT, J. J., et A. PELAYO. « COMPLEX STRUCTURES ON FOUR-MANIFOLDS WITH SYMPLECTIC TWO-TORUS ACTIONS ». International Journal of Mathematics 22, no 03 (mars 2011) : 449–63. http://dx.doi.org/10.1142/s0129167x11006854.

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We apply the general theory for symplectic torus actions with symplectic or coisotropic orbits to prove that a four-manifold with a symplectic two-torus action admits an invariant complex structure and give an identification of those that do not admit a Kähler structure with Kodaira's class of complex surfaces which admit a nowhere vanishing holomorphic (2,0)-form, but are not a torus nor a K3 surface.
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35

Mongardi, Giovanni, et Claudio Onorati. « Birational geometry of irreducible holomorphic symplectic tenfolds of O’Grady type ». Mathematische Zeitschrift 300, no 4 (18 janvier 2022) : 3497–526. http://dx.doi.org/10.1007/s00209-021-02966-6.

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36

Nieper, Marc A. « Hirzebruch-Riemann-Roch formulae on irreducible symplectic Kähler manifolds ». Journal of Algebraic Geometry 12, no 4 (2003) : 715–39. http://dx.doi.org/10.1090/s1056-3911-03-00325-4.

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37

Szabó, Zoltán. « Simply-connected irreducible 4-manifolds with no symplectic structures ». Inventiones Mathematicae 132, no 3 (8 mai 1998) : 457–66. http://dx.doi.org/10.1007/s002220050230.

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38

GEIGES, HANSJÖRG, et KAI ZEHMISCH. « Symplectic cobordisms and the strong Weinstein conjecture ». Mathematical Proceedings of the Cambridge Philosophical Society 153, no 2 (28 février 2012) : 261–79. http://dx.doi.org/10.1017/s0305004112000163.

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AbstractWe study holomorphic spheres in certain symplectic cobordisms and derive information about periodic Reeb orbits in the concave end of these cobordisms from the non-compactness of the relevant moduli spaces. We use this to confirm the strong Weinstein conjecture (predicting the existence of null-homologous Reeb links) for various higher-dimensional contact manifolds, including contact type hypersurfaces in subcritical Stein manifolds and in some cotangent bundles. The quantitative character of this result leads to the definition of a symplectic capacity.
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39

KOVALEV, ALEXEI, et NAM-HOON LEE. « K3 surfaces with non-symplectic involution and compact irreducible G2-manifolds ». Mathematical Proceedings of the Cambridge Philosophical Society 151, no 2 (10 juin 2011) : 193–218. http://dx.doi.org/10.1017/s030500411100003x.

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AbstractWe consider the connected-sum method of constructing compact Riemannian 7-manifolds with holonomy G2 developed by the first named author. The method requires pairs of projective complex threefolds endowed with anticanonical K3 divisors and the latter K3 surfaces should satisfy a certain ‘matching condition’ intertwining on their periods and Kähler classes. Suitable examples of threefolds were previously obtained by blowing up curves in Fano threefolds.In this paper, we give a large new class of suitable algebraic threefolds using theory of K3 surfaces with non-symplectic involution due to Nikulin. These threefolds are not obtainable from Fano threefolds as above, and admit matching pairs leading to topologically new examples of compact irreducible G2-manifolds. ‘Geography’ of the values of Betti numbers b2, b3 for the new (and previously known) examples of irreducible G2 manifolds is also discussed.
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40

MARKUSHEVICH, D., et A. S. TIKHOMIROV. « NEW SYMPLECTIC V-MANIFOLDS OF DIMENSION FOUR VIA THE RELATIVE COMPACTIFIED PRYMIAN ». International Journal of Mathematics 18, no 10 (novembre 2007) : 1187–224. http://dx.doi.org/10.1142/s0129167x07004503.

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Three new examples of 4-dimensional irreducible symplectic V-manifolds are constructed. Two of them are relative compactified Prymians of a family of genus-3 curves with involution, and the third one is obtained from a Prymian by Mukai's flop. They have the same singularities as two of Fujiki's examples, namely, 28 isolated singular points analytically equivalent to the Veronese cone of degree 8, but a different Euler number. The family of curves used in this construction forms a linear system on a K3 surface with involution. The structure morphism of both Prymians to the base of the family is a Lagrangian fibration in abelian surfaces with polarization of type (1,2). No example of such fibration is known on nonsingular irreducible symplectic varieties.
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41

Tardini, Nicoletta, et Adriano Tomassini. « On the cohomology of almost-complex and symplectic manifolds and proper surjective maps ». International Journal of Mathematics 27, no 12 (novembre 2016) : 1650103. http://dx.doi.org/10.1142/s0129167x16501032.

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Let [Formula: see text] be an almost-complex manifold. In [Comparing tamed and compatible symplectic cones and cohomological properties of almost-complex manifolds, Comm. Anal. Geom. 17 (2009) 651–683], Li and Zhang introduce [Formula: see text] as the cohomology subgroups of the [Formula: see text]th de Rham cohomology group formed by classes represented by real pure-type forms. Given a proper, surjective, pseudo-holomorphic map between two almost-complex manifolds, we study the relationship among such cohomology groups. Similar results are proven in the symplectic setting for the cohomology groups introduced in [Cohomology and Hodge Theory on Symplectic manifolds: I, J. Differ. Geom. 91(3) (2012) 383–416] by Tseng and Yau and a new characterization of the hard Lefschetz condition in dimension [Formula: see text] is provided.
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42

Fu, Lie, et Grégoire Menet. « On the Betti numbers of compact holomorphic symplectic orbifolds of dimension four ». Mathematische Zeitschrift 299, no 1-2 (12 janvier 2021) : 203–31. http://dx.doi.org/10.1007/s00209-020-02682-7.

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AbstractWe extend a result of Guan by showing that the second Betti number of a 4-dimensional primitively symplectic orbifold is at most 23 and there are at most 91 singular points. The maximal possibility 23 can only occur in the smooth case. In addition to the known smooth examples with second Betti numbers 7 and 23, we provide examples of such orbifolds with second Betti numbers 3, 5, 6, 8, 9, 10, 11, 14 and 16. In an appendix, we extend Salamon’s relation among Betti/Hodge numbers of symplectic manifolds to symplectic orbifolds.
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43

DORFMEISTER, JOSEF G., et TIAN-JUN LI. « RELATIVE RUAN AND GROMOV–TAUBES INVARIANTS OF SYMPLECTIC 4-MANIFOLDS ». Communications in Contemporary Mathematics 15, no 01 (22 janvier 2013) : 1250062. http://dx.doi.org/10.1142/s0219199712500629.

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We define relative Ruan invariants that count embedded connected symplectic submanifolds which contact a fixed symplectic hypersurface V in a symplectic 4-manifold (X, ω) at prescribed points with prescribed contact orders (in addition to insertions on X\V). We obtain invariants of the deformation class of (X, V, ω). Two large issues must be tackled to define such invariants: (1) curves lying in the hypersurface V and (2) genericity results for almost complex structures constrained to make V pseudo-holomorphic (or almost complex). Moreover, these invariants are refined to take into account rim-tori decompositions. In the latter part of the paper, we extend the definition to disconnected submanifolds and construct relative Gromov–Taubes invariants.
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44

Ali, Danish, Johann Davidov et Oleg Mushkarov. « Holomorphic curvatures of twistor spaces ». International Journal of Geometric Methods in Modern Physics 11, no 03 (mars 2014) : 1450022. http://dx.doi.org/10.1142/s0219887814500224.

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We study the twistor spaces of oriented Riemannian 4-manifolds as a source of almost Hermitian 6-manifolds of constant or strictly positive holomorphic, Hermitian and orthogonal bisectional curvatures. In particular, we obtain explicit formulas for these curvatures in the case when the base manifold is Einstein and self-dual, and observe that the "squashed" metric on ℂℙ3 is a non-Kähler Hermitian–Einstein metric of positive holomorphic bisectional curvature. This shows that a recent result of Kalafat and Koca [M. Kalafat and C. Koca, Einstein–Hermitian 4-manifolds of positive bisectional curvature, preprint (2012), arXiv: 1206.3941v1 [math.DG]] in dimension four cannot be extended to higher dimensions. We prove that the Hermitian bisectional curvature of a non-Kähler Hermitian manifold is never a nonzero constant which gives a partial negative answer to a question of Balas and Gauduchon [A. Balas and P. Gauduchon, Any Hermitian metric of constant non-positive (Hermitian) holomorphic sectional curvature on a compact complex surface is Kähler, Math. Z.190 (1985) 39–43]. Finally, motivated by an integrability result of Vezzoni [L. Vezzoni, On the Hermitian curvature of symplectic manifolds, Adv. Geom.7 (2007) 207–214] for almost Kähler manifolds, we study the problem when the holomorphic and the Hermitian bisectional curvatures of an almost Hermitian manifold coincide. We extend the result of Vezzoni to a more general class of almost Hermitian manifolds and describe the twistor spaces having this curvature property.
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45

Namikawa, Y. « Counter-example to global Torelli problem for irreducible symplectic manifolds ». Mathematische Annalen 324, no 4 (1 décembre 2002) : 841–45. http://dx.doi.org/10.1007/s00208-002-0344-2.

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46

Nagai, Yasunari. « On monodromies of a degeneration of irreducible symplectic Kähler manifolds ». Mathematische Zeitschrift 258, no 2 (9 mai 2007) : 407–26. http://dx.doi.org/10.1007/s00209-007-0179-3.

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47

Jabuka, Stanislav. « Symplectic surfaces and generic $J$-holomorphic structures on 4-manifolds ». Illinois Journal of Mathematics 48, no 2 (avril 2004) : 675–85. http://dx.doi.org/10.1215/ijm/1258138406.

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48

Szab�, Zolt�n, et Peter Ozsv�th. « Holomorphic triangle invariants and the topology of symplectic four-manifolds ». Duke Mathematical Journal 121, no 1 (janvier 2004) : 1–34. http://dx.doi.org/10.1215/s0012-7094-04-12111-6.

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Matsushita, Daisuke. « On singular fibres of Lagrangian fibrations over holomorphic symplectic manifolds ». Mathematische Annalen 321, no 4 (1 décembre 2001) : 755–73. http://dx.doi.org/10.1007/s002080100251.

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Joumaah, Malek. « Non-symplectic involutions of irreducible symplectic manifolds of $$K3^{[n]}$$ K 3 [ n ] -type ». Mathematische Zeitschrift 283, no 3-4 (20 janvier 2016) : 761–90. http://dx.doi.org/10.1007/s00209-016-1620-2.

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