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We propose a general framework for studying pseudo-Anosov homeomorphisms on translation surfaces. This new approach, among other consequences, allows us to compute the systole of the Teichmueller geodesic flow restricted to the…

Geometric Topology · Mathematics 2017-05-31 Corentin Boissy , Erwan Lanneau

We derive the 2-component Camassa-Holm equation and corresponding N=1 super generalization as geodesic flows with respect to the $H^1$ metric on the extended Bott-Virasoro and superconformal groups, respectively.

Exactly Solvable and Integrable Systems · Physics 2008-04-24 Partha Guha , Peter J. Olver

We develop the local Morse theory for a class of non-twice continuously differentiable functionals on Hilbert spaces, including a new generalization of the Gromoll-Meyer's splitting theorem and a weaker Marino-Prodi perturbation type…

Functional Analysis · Mathematics 2017-02-23 Guangcun Lu

We study algebraic varieties parametrized by topological spaces and enlarge the domains of Lawson homology and morphic cohomology to this category. We prove a Lawson suspension theorem and splitting theorem. A version of Friedlander-Lawson…

Algebraic Geometry · Mathematics 2012-01-04 J. H. Teh

The symplectic Floer homology HF_*(f) of a symplectomorphism f:S->S encodes data about the fixed points of f using counts of holomorphic cylinders in R x M_f, where M_f is the mapping torus of f. We give an algorithm to compute HF_*(f) for…

Symplectic Geometry · Mathematics 2014-11-11 Andrew Cotton-Clay

We assign, to a Langrangian submanifold $L$, a new homology which manages the bubbling of disks by means of auxiliary Morse data. This invariant of the Hamiltonian isotopy class of $L$ has many applications and naturally leads to a…

Symplectic Geometry · Mathematics 2007-05-23 Octav Cornea , Francois Lalonde

We define Floer homology for a time-independent, or autonomous Hamiltonian on a symplectic manifold with contact type boundary, under the assumption that its 1-periodic orbits are transversally nondegenerate. Our construction is based on…

Symplectic Geometry · Mathematics 2008-04-30 Frédéric Bourgeois , Alexandru Oancea

The goal of this work is to extend Dirac-type tensor equations to a curved space. We take four 1-forms (a tetrad) as a unique structure, which determines a geometry of space-time.

Mathematical Physics · Physics 2019-10-21 N. G. Marchuk

Main theorem of this paper states that Floer cohomology groups in a Hilbert space are isomorphic to the cohomological Conley Index. It is also shown that calculating cohomological Conley Index does not require finite dimensional…

Differential Geometry · Mathematics 2014-08-05 Maciej Starostka

The enchanting Dirac fermions in graphene stimulated us to seek for other two-dimensional (2D) Dirac materials, and boron monolayers may be a good candidate. So far, a number of monolayer boron sheets have been theoretically predicted, and…

Mesoscale and Nanoscale Physics · Physics 2016-12-28 Honghong Zhang , Yuee Xie , Zhongwei Zhang , Chengyong Zhong , Yafei Li , Zhongfang Chen , Yuanping Chen

In this paper we use the strength of the constraint method in combination with a generalized Borsuk-Ulam type theorem and a cohomological intersection lemma to show how one can obtain many new topological transversal theorems of Tverberg…

In this paper we construct a spectral sequence computing a modified version of morphic cohomology of a toric variety (even when it is singular) in terms of combinatorial data coming from the fan of the toric variety.

Algebraic Geometry · Mathematics 2010-01-19 Abdó Roig-Maranges

We define $S^1$-equivariant symplectic homology for symplectically aspherical manifolds with contact boundary, using a Floer-type construction first proposed by Viterbo. We show that it is related to the usual symplectic homology by a Gysin…

Symplectic Geometry · Mathematics 2013-12-23 Frédéric Bourgeois , Alexandru Oancea

Aimed at complex geometers and representation theorists, this survey explores higher dimensional analogues of the rich interplay between Riemann surfaces, Virasoro and Kac-Moody Lie algebras, and conformal blocks. We introduce a panoply of…

Algebraic Geometry · Mathematics 2025-08-12 Owen Gwilliam , Brian R. Williams

We introduce a functional that couples the nonlinear sigma model with a spinor field: $L=\int_M[|d\phi|^2+(\psi,\D\psi)]$. In two dimensions, it is conformally invariant. The critical points of this functional are called Dirac-harmonic…

Differential Geometry · Mathematics 2007-05-23 Qun Chen , Juergen Jost , Jiayu Li , Guofang Wang

We introduce a new notion of persistence modules endowed with operators. It encapsulates the additional structure on Floer-type persistence modules coming from the intersection product with classes in the ambient (quantum) homology, along…

Symplectic Geometry · Mathematics 2017-03-07 Leonid Polterovich , Egor Shelukhin , Vukašin Stojisavljević

In this paper we give a complete topological classification of orientation preserving Morse-Smale diffeomorphisms on orientable closed surfaces. For MS diffeomorphisms with relatively simple behaviour it was known that such a classification…

Dynamical Systems · Mathematics 2017-12-07 V. Z. Grines , O. V. Pochinka , S. van Strien

We develop the local Morse theory for a class of non-twice continuously differentiable functionals on Hilbert spaces, including a new generalization of the Gromoll-Meyer's splitting theorem and a weaker Marino-Prodi perturbation type…

Functional Analysis · Mathematics 2019-06-06 Guangcun Lu

The homology of a 2-colored dioperad of decorated Riemann surfaces, relevant to open-closed string field theory, is computed. The structure it describes is realized in an open-closed setting of string topology via an action at the level of…

Algebraic Topology · Mathematics 2009-09-29 Eric Harrelson

This paper gives a detailed construction of Seiberg-Witten-Floer homology for a closed oriented 3-manifold with a non-torsion $\spinc$ structure. Gluing formulae for certain 4-dimensional manifolds splitting along an embedded 3-manifold are…

Geometric Topology · Mathematics 2007-05-23 Alan L. Carey , Bai-Ling Wang
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