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In this paper we study grouplike monoids, these are monoids that contain a group to which we add an ordered set of idempotents. We classify finite categories with two objects having grouplike endomorphism monoids, and we give a count of…

Category Theory · Mathematics 2022-10-10 Najwa Ghannoum

Embedded Lagrangian cobordisms between Legendrian submanifolds are produced from isotopy, spinning, and handle attachment constructions that employ the technique of generating families. Moreover, any Legendrian with a generating family has…

Symplectic Geometry · Mathematics 2015-09-30 Frederic Bourgeois , Joshua M. Sabloff , Lisa Traynor

We give a finite presentation of the cobordism symmetric monoidal bicategory of (smooth, oriented) closed manifolds, cobordisms and cobordisms with corners as an extension of the bicategory of closed manifolds, cobordisms and…

Geometric Topology · Mathematics 2026-01-13 Benjamin Haïoun

Given two four-dimensional symplectic manifolds, together with knots in their boundaries, we define an ``anchored symplectic embedding'' to be a symplectic embedding, together with a two-dimensional symplectic cobordism between the knots…

Symplectic Geometry · Mathematics 2025-12-09 Michael Hutchings , Agniva Roy , Morgan Weiler , Yuan Yao

We provide some constructions using Lagrangian cobordisms which improve known examples for some symplectic squeezing problems. Additionally, we prove a flexibility result that Lagrangian submanifolds which are Lagrangian isotopic are also…

Symplectic Geometry · Mathematics 2022-09-01 Jeff Hicks , Cheuk Yu Mak

The category $\mathbf{Rel}$ is the category of sets (objects) and relations (morphisms). Equipped with the direct product of sets, $\mathbf{Rel}$ is a monoidal category. Moreover, $\mathbf{Rel}$ is a locally posetal 2-category, since every…

Rings and Algebras · Mathematics 2017-11-27 Anna Jenčová , Gejza Jenča

For a monotone symplectic manifold and a smooth anticanonical divisor, there is a formal deformation of the symplectic cohomology of the divisor complement, defined by allowing Floer cylinders to intersect the divisor. We compute this…

Symplectic Geometry · Mathematics 2024-08-22 Daniel Pomerleano , Paul Seidel

We introduce a new class of friezes which is related to symplectic geometry. On the algebraic and combinatrics sides, this variant of friezes is related to the cluster algebras involving the Dynkin diagrams of type ${\rm C}_{2}$ and ${\rm…

Combinatorics · Mathematics 2019-11-15 Sophie Morier-Genoud

We introduce new invariants associated to collections of compact subsets of a symplectic manifold. They are defined through an elementary-looking variational problem involving Poisson brackets. The proof of the non-triviality of these…

Symplectic Geometry · Mathematics 2015-03-19 Lev Buhovsky , Michael Entov , Leonid Polterovich

We construct a symmetric monoidal category $LIE^{MC}$ whose objects are shifted L-infinity algebras equipped with a complete descending filtration. Morphisms of this category are "enhanced" infinity morphisms between shifted L-infinity…

Category Theory · Mathematics 2016-01-11 Vasily A. Dolgushev , Christopher L. Rogers

The aim of this paper is to give a new description of the geometry appearing in the multi-specialization along a general family of submanifolds of a real analytic manifold (including some important cases as clean intersection or a…

Algebraic Geometry · Mathematics 2016-09-02 Naofumi Honda , Luca Prelli

We study moduli spaces of meromorphic connections (with arbitrary order poles) over Riemann surfaces together with the corresponding spaces of monodromy data (involving Stokes matrices). Natural symplectic structures are found and described…

Differential Geometry · Mathematics 2020-02-04 Philip Boalch

The main purpose of this paper is to introduce the structure of soft group category. In this category, we determine some special objects and morphisms having a universal structure such as the final object and product. Therefore, the…

Algebraic Topology · Mathematics 2023-08-01 Nazmiye Alemdar , Hasan Arslan

In the context of the two dimensional sigma model, we show that classical field theory naturally defines a functor from Segal's category of Riemann surfaces to the Guillemin-Sternberg/Weinstein category of canonical relations in symplectic…

Symplectic Geometry · Mathematics 2014-04-11 Patrick Vaclav Nabelek , Douglas Pickrell

A symplectic form is called hyperbolic if its pull-back to the universal cover is a differential of a bounded one-form. The present paper is concerned with the properties and constructions of manifolds admitting hyperbolic symplectic forms.…

Symplectic Geometry · Mathematics 2007-11-27 Jarek Kedra

We present several aspects of the "topology of meromorphic functions", which we conceive as a general theory which includes the topology of holomorphic functions, the topology of pencils on quasi-projective spaces and the topology of…

Algebraic Geometry · Mathematics 2018-03-29 Mihai Tibar

Let M be a Weinstein four-manifold mirror to Y\D for (Y,D) a log Calabi--Yau surface; intuitively, this is typically the Milnor fibre of a smoothing of a cusp singularity. We introduce two families of symplectomorphisms of M: Lagrangian…

Symplectic Geometry · Mathematics 2026-03-25 Paul Hacking , Ailsa Keating

We show how the notion of intercategory encompasses a wide variety of three-dimensional structures from the literature, notably duoidal categories, monoidal double categories, cubical bicategories, double bicategories and Gray categories.…

Category Theory · Mathematics 2016-07-12 Robert Paré , Marco Grandis

We describe several families of Lagrangian submanifolds in the complex Euclidean space which are H-minimal, i.e. critical points of the volume functional restricted to Hamiltonian variations. We make use of various constructions involving…

Differential Geometry · Mathematics 2010-08-17 Henri Anciaux , Ildefonso Castro

We construct model category structures for monoids and modules in symmetric monoidal model categories which satisfy an extra axiom, the monoidal axiom, with applications to symmetric spectra and $\Gamma$-spaces.

Algebraic Topology · Mathematics 2020-01-13 Stefan Schwede , Brooke E. Shipley