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Under certain topological assumptions, we show that two monotone Lagrangian submanifolds embedded in the standard symplectic vector space with the same monotonicity constant cannot link one another and that, individually, their smooth knot…

Symplectic Geometry · Mathematics 2024-07-12 Georgios Dimitroglou Rizell , Jonathan David Evans

We describe the doubled space of Double Field Theory as a group manifold $G$ with an arbitrary generalized metric. Local information from the latter is not relevant to our discussion and so $G$ only captures the topology of the doubled…

High Energy Physics - Theory · Physics 2018-04-30 Falk Hassler

In this article, we consider the Floer cohomology (with $\Z_2$ coefficients) between torus fibers and the real Lagrangian in Fano toric manifolds. We first investigate the conditions under which the Floer cohomology is defined, and then…

Symplectic Geometry · Mathematics 2022-06-27 Garrett Alston , Lino Amorim

In this note we study solid tori in contact manifolds. Specifically, we study the width of a knot type and give criteria for when it is equal to the maximal Thurston-Bennequin invariant, and when it is larger. We also prove there are many…

Geometric Topology · Mathematics 2025-02-24 John Etnyre , Youlin Li , Bülent Tosun

We compute the $E_2$ page in the Rasmussen spectral sequence from triply graded to $\mathfrak{gl}_N$ Khovanov--Rozansky stable homology of torus knots. This confirms a weak form of the conjecture of the second author, Oblomkov, and…

Geometric Topology · Mathematics 2025-07-02 William Ballinger , Eugene Gorsky , Matthew Hogancamp , Joshua Wang

Free actions of finite groups on spheres give rise to topological spherical space forms. The existence and classification problems for space forms have a long history in the geometry and topology of manifolds. In this article, we present a…

Geometric Topology · Mathematics 2017-08-29 Ian Hambleton

A slope $p/q$ is a characterizing slope for a knot $K$ in $S^3$ if the oriented homeomorphism type of $p/q$-surgery on $K$ determines $K$ uniquely. We show that for each torus knot its set of characterizing slopes contains all but finitely…

Geometric Topology · Mathematics 2016-10-12 Duncan McCoy

We apply the $C^*$-algebraic formalism of topological T-duality due to Mathai and Rosenberg to a broad class of topological spaces that include the torus bundles appearing in string theory compactifications with duality twists, such as…

High Energy Physics - Theory · Physics 2021-02-08 Paolo Aschieri , Richard J. Szabo

We define an equivariant Lagrangian Floer theory for Lagrangian torus fibers in a compact symplectic toric manifold equipped with a subtorus action. We show that the set of all Lagrangian torus fibers with weak bounding cochain data whose…

Symplectic Geometry · Mathematics 2023-11-01 Yao Xiao

We investigate the homotopy type of a certain homogeneous space for a simple complex algebraic group. We calculate some of its classical topological invariants and introduce a new one. We also propose several conjectures about its…

Algebraic Topology · Mathematics 2026-03-24 Dylan Johnston , Dmitriy Rumynin

We develop a general theory of log spaces, in which one can make sense of the basic notions of logarithmic geometry, in the sense of Fontaine-Illusie-Kato. Many of our general constructions with log spaces are new, even in the algebraic…

Differential Geometry · Mathematics 2015-07-27 W. D. Gillam , Samouil Molcho

We construct an infinite family of smoothly slice knots that we prove are topologically doubly slice. Using the correction terms coming from Heegaard Floer homology, we show that none of these knots is smoothly doubly slice. We use these…

Geometric Topology · Mathematics 2017-05-17 Jeffrey Meier

We characterize the (1, 1) knots in the three-sphere and lens spaces that admit non-trivial L-space surgeries. As a corollary, 1-bridge braids in these manifolds admit non- trivial L-space surgeries. We also recover a characterization of…

Geometric Topology · Mathematics 2019-02-20 Joshua Evan Greene , Sam Lewallen , Faramarz Vafaee

We describe of the topology of the geometric quotients of 2n dimensional compact connected symplectic manifolds with n-1 dimensional torus actions. When the isotropy weights at each fixed point are in general position, the quotient is…

Symplectic Geometry · Mathematics 2020-12-16 Yael Karshon , Susan Tolman

This article is a survey of a series of papers [FOOO3,FOOO4,FOOO5] in which we developed the method of calculation of Floer cohomology of Lagrangian torus orbits in compact toric manifolds, and its applications to symplectic topology and to…

Symplectic Geometry · Mathematics 2010-11-18 Kenji Fukaya , Yong-Geun Oh , Hiroshi Ohta , Kaoru Ono

We define a "sutured topological quantum field theory", motivated by the study of sutured Floer homology of product 3-manifolds, and contact elements. We study a rich algebraic structure of suture elements in sutured TQFT, showing that it…

Symplectic Geometry · Mathematics 2014-10-01 Daniel V. Mathews

We extend the topological field theory (``itsy bitsy topological field theory"') of our previous work from mod-2 to twisted coefficients. This topological field theory is derived from sutured Floer homology but described purely in terms of…

Symplectic Geometry · Mathematics 2018-04-10 Daniel V. Mathews

We show that a rational homology solid torus is a Heegaard Floer homology solid torus if and only if it has a Dehn filling with a non-separating 2-sphere. Using this, we characterize Seifert fibered Heegaard Floer solid tori.

Geometric Topology · Mathematics 2025-05-05 Akram Alishahi , Tye Lidman , Robert Lipshitz

A toric manifold is a compact non-singular toric variety equipped with a natural half-dimensional compact torus action. A torus manifold is an oriented, closed, smooth manifold of dimension $2n$ with an effective action of a compact torus…

Algebraic Topology · Mathematics 2014-10-01 Suyoung Choi , Shintarô Kuroki

We establish a framework for extending invariants of sutured manifolds to invariants of pairs of sutured manifolds who differ by attaching a basic slice along a torus boundary component. In the particular case of (bordered-)sutured Floer…

Geometric Topology · Mathematics 2022-04-28 Thomas Hockenhull