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Let $L\subset J^1(M)$ be a Legendrian submanifold of the 1-jet space of a Riemannian $n$-manifold $M$. A correspondence is established between rigid flow trees in $M$ determined by $L$ and boundary punctured rigid pseudo-holomorphic disks…

Symplectic Geometry · Mathematics 2014-11-11 Tobias Ekholm

We determine parts of the contact homology of certain contact 3-manifolds in the framework of open book decompositions, due to Giroux. We study two cases: when the monodromy map of the compatible open book is periodic and when it is…

Geometric Topology · Mathematics 2008-10-01 Vincent Colin , Ko Honda

Let $Z \to Y^{2n+1}$ be the bundle of Legendrian $n$-planes over a contact manifold $Y$. We consider a foliation of $Z$ by canonical lifts of Legendrian submanifolds, called \emph{Legendrian submanifold path geometry}, whose flat model is…

Differential Geometry · Mathematics 2007-05-23 Sung Ho Wang

All knots in $R^3$ possess Seifert surfaces, and so the classical Thurston-Bennequin and rotation (or Maslov) invariants for Legendrian knots in a contact structure on $R^3$ can be defined. The definitions extend easily to null-homologous…

Geometric Topology · Mathematics 2015-02-27 Paul A. Schweitzer SJ , Fábio S. Souza

A theorem of Kontsevich relates the homology of certain infinite dimensional Lie algebras to graph homology. We formulate this theorem using the language of reversible operads and mated species. All ideas are explained using a pictorial…

Quantum Algebra · Mathematics 2007-05-23 Swapneel Mahajan

We introduce constructions of exact Lagrangian cobordisms with cylindrical Legendrian ends and study their invariants which arise from Symplectic Field Theory. A pair $(X,L)$ consisting of an exact symplectic manifold $X$ and an exact…

Symplectic Geometry · Mathematics 2012-12-27 Tobias Ekholm , Ko Honda , Tamás Kálmán

After observing that the well-known convexity theorems of symplectic geometry also hold for compact contact manifolds with an effective action of a torus whose Reeb vector field corresponds to an element of the Lie algebra of the torus, we…

Differential Geometry · Mathematics 2009-10-31 Charles P. Boyer , Krzysztof Galicki

k-Contact geometry is a generalisation of contact geometry to analyse field theories. We develop an approach to k-contact geometry based on distributions that are distributionally maximally non-integrable and admit, locally, k commuting…

Differential Geometry · Mathematics 2025-02-06 Javier de Lucas , Xavier Rivas , Tomasz Sobczak

We present new families of examples of non-simple prime Legendrian and transversal knots in tight Lens spaces, which demonstrate that the botany of Legendrians in Lens space is rich. In fact, there are more non-isotopic Legendrians that are…

Geometric Topology · Mathematics 2025-12-29 Ipsita Datta , Tanushree Shah

A correspondence is studied by H. Matsuda between front projections of Legendrian links in the standard contact structure for 3-space and rectangular diagrams. In this paper, we introduce braided rectangular diagrams, and study a…

Geometric Topology · Mathematics 2007-08-20 Hiroshi Matsuda , William W. Menasco

The paper deals with topologically trivial Legendrian knots in tight and overtwisted contact 3-manifolds. The first part contains a thorough exposition of the proof of the classification of topologically trivial Legendrian knots (i.e.…

Geometric Topology · Mathematics 2008-11-16 Y. Eliashberg , M. Fraser

Let $G$ be a split semisimple linear algebraic group over a field and let $X$ be a generic twisted flag variety of $G$. Extending the Hilbert basis techniques to Laurent polynomials over integers we give an explicit presentation of the…

Algebraic Geometry · Mathematics 2017-11-01 Sanghoon Baek , Rostislav Devyatov , Kirill Zainoulline

We introduce topological invariants of knots and braid conjugacy classes, in the form of differential graded algebras, and present an explicit combinatorial formulation for these invariants. The algebras conjecturally give the relative…

Geometric Topology · Mathematics 2014-11-11 Lenhard Ng

We introduce a Legendrian invariant built out of the Turaev torsion of generating families. This invariant is defined for a certain class of Legendrian submanifolds of 1-jet spaces, which we call of Euler type. We use our invariant to study…

Symplectic Geometry · Mathematics 2020-10-21 Daniel Alvarez-Gavela , Kiyoshi Igusa

We relate the version of rational Symplectic Field Theory for exact Lagrangian cobordisms introduced in [5] with linearized Legendrian contact homology. More precisely, if $L\subset X$ is an exact Lagrangian submanifold of an exact…

Symplectic Geometry · Mathematics 2009-02-26 Tobias Ekholm

Using the structural theorems developed in [Hua13], we study the deformation theory of coisotropic submanifolds in contact manifolds, under the assumption that the characteristic foliation is nonsingular. In the "middle" dimensions, we find…

Symplectic Geometry · Mathematics 2014-11-25 Yang Huang

In this note we study several aspects of coisotropic submanifolds of a contact manifold. In particular we give a structure theorem for the singularity of the characteristic foliation of a coisotropic submanifold. Moreover we establish the…

Symplectic Geometry · Mathematics 2013-12-11 Yang Huang

We consider Legendrian contact structures on odd-dimensional complex analytic manifolds. We are particularly interested in integrable structures, which can be encoded by compatible complete systems of second order PDEs on a scalar function…

Differential Geometry · Mathematics 2020-07-24 Boris Doubrov , Alexandr Medvedev , Dennis The

We give a quantitative refinement of the invariance of the Legendrian contact homology algebra in general contact manifolds. We show that in this general case, the Lagrangian cobordism trace of a Legendrian isotopy defines a DGA stable tame…

Symplectic Geometry · Mathematics 2024-09-04 Georgios Dimitroglou Rizell , Michael G. Sullivan

We generalize Turaev's definition of torsion invariants of pairs (M,x), where M is a 3-dimensional manifold and x is an Euler structure on M (a non-singular vector field up to homotopy relative to bM and local modifications in int(M).…

Geometric Topology · Mathematics 2007-05-23 Riccardo Benedetti , Carlo Petronio
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