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We generalize the inequality being a counterpart of the several complex variables version of the Suita conjecture. For this aim higher order generalizations of the Bergman kernel are introduced. As a corollary some new partial results on…

Complex Variables · Mathematics 2018-11-08 Wlodzimierz Zwonek , Zbigniew Blocki

We establish the relationship between folded symplectic forms and convex hypersurface theory in contact topology. As an application, we use convex hypersurface theory to reprove and strengthen the existence result for folded symplectic…

Symplectic Geometry · Mathematics 2024-06-28 Joseph Breen

The paper explores some algebraic constructions arising in the theory of Lefschetz fibrations. Specifically, it covers in a fair amount of detail the algebraic issues outlined in ``Symplectic homology as Hochschild homology''…

K-Theory and Homology · Mathematics 2008-04-24 Paul Seidel

We provide a complete set of moves relating any two Lefschetz fibrations over the disk having as their total space the same 4-dimensional 2-handlebody up to 2-equivalence. As a consequence, we also obtain moves relating diffeomorphic…

Geometric Topology · Mathematics 2013-09-11 Nikos Apostolakis , Riccardo Piergallini , Daniele Zuddas

We present a generalized Weinstein Tubular Neighbourhood theorem for Lagrangian subbundles of Symplectic fibrations. This is then used to study the space of Lagrangian fibrations of symplectic manifolds.

Symplectic Geometry · Mathematics 2009-05-06 Nicolas Roy

We prove a generalization of the cobordism hypothesis of Baez--Dolan and Hopkins--Lurie for bordisms with arbitrary geometric structures, such as Riemannian metrics, complex and symplectic structures, principal bundles with connections, or…

Algebraic Topology · Mathematics 2022-06-22 Daniel Grady , Dmitri Pavlov

We prove a normal form theorem for Poisson structures around Poisson transversals (also called cosymplectic submanifolds), which simultaneously generalizes Weinstein's symplectic neighborhood theorem from symplectic geometry and Weinstein's…

Symplectic Geometry · Mathematics 2017-04-12 Pedro Frejlich , Ioan Marcut

The lifting problem for continuous bi-equivariant maps and bi-equivariant covering homotopies is considered, which leads to the notion of a bi-equivariant fibration. An intrinsic characteristic of a bi-equivariant Hurewicz fibration is…

General Topology · Mathematics 2023-07-24 Pavel S. Gevorgyan

We show that contact homology distinguishes infinitely many tight contact structures on any orientable, toroidal, irreducible 3-manifold. As a consequence of the contact homology computations, on a very large class of toroidal manifolds,…

Geometric Topology · Mathematics 2014-11-11 Frederic Bourgeois , Vincent Colin

We define Symplectic cohomology groups for a class of symplectic fibrations with closed symplectic base and convex at infinity fiber. The crucial geometric assumption on the fibration is a negativity property reminiscent of negative…

Symplectic Geometry · Mathematics 2007-07-24 Alexandru Oancea

We show that a stabilized convex symplectic (also called Liouville) manifold with the homotopy type of a half dimensional CW-complex is symplectomorphic to a flexible Weinstein manifold.

Symplectic Geometry · Mathematics 2021-06-16 Yakov Eliashberg , Noboru Ogawa , Toru Yoshiyasu

We produce new examples of Riemannian manifolds with scalar curvature lower bounds and collapsing behavior along codimension 2 submanifolds. Applications of this construction are given, primarily on questions concerning the stability of…

Differential Geometry · Mathematics 2025-01-17 Demetre Kazaras , Kai Xu

We prove two general factorization theorems for fixed-point invariants of fibrations: one for the Lefschetz number and one for the Reidemeister trace. These theorems imply the familiar multiplicativity results for the Lefschetz and Nielsen…

Algebraic Topology · Mathematics 2014-10-01 Kate Ponto , Michael Shulman

Using the recent results of Siebert and Tian about the holomorphicity of genus 2 Lefschetz fibrations with irreducible singular fibers, we show that any genus 2 Lefschetz fibration becomes holomorphic after fiber sum with a holomorphic…

Geometric Topology · Mathematics 2007-05-23 Denis Auroux

We show that for each k > 3 there are infinitely many finite type Stein manifolds diffeomorphic to Euclidean space R^{2k} which are pairwise distinct as symplectic manifolds.

Symplectic Geometry · Mathematics 2009-02-11 Mark McLean

Combining the tools of geometric analysis with properties of Jordan angles and angle space distributions, we derive a spherical and a Euclidean Bernstein theorem for minimal submanifolds of arbitrary dimension and codimension, under the…

Differential Geometry · Mathematics 2014-05-26 J. Jost , Y. L. Xin , Ling Yang

Hofer proved the Weinstein conjecture for a closed contact 3-manifold with an overtwisted disk. In this article we extend it to the virtual contact structure and provide a new explicit example of the virtual contact structure with an…

Symplectic Geometry · Mathematics 2014-02-18 Youngjin Bae

A strong version of a conjecture of Viterbo asserts that all normalized symplectic capacities agree on convex domains. We review known results showing that certain specific normalized symplectic capacities agree on convex domains. We also…

Symplectic Geometry · Mathematics 2020-10-06 Jean Gutt , Michael Hutchings , Vinicius G. B. Ramos

In this paper we consider connections between Ricci solitons and Einstein metrics on homogeneous spaces. We show that a semi-algebraic Ricci soliton admits an Einstein one-dimensional extension if the soliton derivation can be chosen to be…

Differential Geometry · Mathematics 2013-02-05 Chenxu He , Peter Petersen , William Wylie

For a given pair of maps f,g:X->M from an arbitrary topological space to an n-manifold, the Lefschetz homomorphism is a certain graded homomorphism L:H(X)->H(M) of degree (-n). We prove a Lefschetz-type coincidence theorem: if the Lefschetz…

Algebraic Topology · Mathematics 2007-05-23 Peter Saveliev