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Given a ring morphism, this paper constructs the twist functor around the induced derived restriction of scalars functor. We prove that the twist around ring morphisms is a derived autoequivalence in the setting of twists induced by…

Algebraic Geometry · Mathematics 2026-05-15 Marina Godinho

The Fourier restriction problem asks when it is meaningful to restrict the Fourier transform of a function to a given set. Many of the key examples are smooth co-dimension 1 manifolds, although there is increasing interest in fractal sets.…

Probability · Mathematics 2026-01-12 Jonathan M. Fraser , Ana E. de Orellana

We develop a method of gluing the local mirrors and functors constructed from immersed Lagrangians in the same deformation class. As a result, we obtain a global mirror geometry and a canonical mirror functor. We apply the method to…

Symplectic Geometry · Mathematics 2018-10-05 Cheol-Hyun Cho , Hansol Hong , Siu-Cheong Lau

This paper introduces a new algebraic notion - triangulated persistence category (TPC) - that refines that of triangulated category in the same sense that a persistence module is a refinement of the notion of a vector space. The spaces of…

Symplectic Geometry · Mathematics 2024-08-13 Paul Biran , Octav Cornea , Jun Zhang

We characterize Forman curvature lower bounds via contractivity of the Hodge Laplacian semigroup. We prove that Ollivier and Forman curvature coincide on edges when maximizing the Forman curvature over the choice of 2-cells. To this end, we…

Differential Geometry · Mathematics 2021-10-12 Jürgen Jost , Florentin Münch

In this article, we define the Fourier-Dunkl transform, which generalizes the Fourier transform. We prove Strichartz's restriction theorem for the Fourier-Dunkl transform for a cone-hyper-surface and its generalisation to the family of…

Classical Analysis and ODEs · Mathematics 2022-12-08 P Jitendra Kumar Senapati , Pradeep Boggarapu , Shyam Swarup Mondal , Hatem Mejjaoli

We consider the Fukaya category associated to a basis of vanishing cycles in a Lefschetz fibration. We show that each element of the Floer cohomology of the monodromy around infinity gives rise to a natural transformation from the Serre…

Symplectic Geometry · Mathematics 2017-06-05 Paul Seidel

A classical result of Bondal-Orlov states that a standard flip in birational geometry gives rise to a fully faithful functor between derived categories of coherent sheaves. We complete their embedding into a semiorthogonal decomposition by…

Algebraic Geometry · Mathematics 2023-02-22 Pieter Belmans , Lie Fu , Theo Raedschelders

We prove that geometric intersections between Weinstein handles induce algebraic relations in the wrapped Fukaya category, which we use to study the Grothendieck group. We produce a surjective map from middle-dimensional singular cohomology…

Symplectic Geometry · Mathematics 2019-10-03 Oleg Lazarev

Answering a question of Witten, we introduce a novel method for defining an integral version of Lagrangian Floer homology, removing the standard restriction that the Lagrangians in question must be relatively Pin. Using this technique, we…

Symplectic Geometry · Mathematics 2019-12-05 Semon Rezchikov

For a homological functor from a triangulated category to an abelian category satisfying some technical assumptions we construct a tower of interpolation categories. These are categories over which the functor factorizes and which capture…

Algebraic Topology · Mathematics 2007-09-27 Georg Biedermann

This paper discusses the cobordism of Lagrangian submanifolds (in the monotone setting) and structures it as a category that is related in a functorial way to an appropriate (derived) Fukaya category. Are also discussed obstructions to…

Symplectic Geometry · Mathematics 2015-03-19 Paul Biran , Octav Cornea

We prove a generalization to the context of real geometry of an intersection formula for the vanishing cycle functor, which in the complex context is due to Dubson, Ginsburg, Le and Sabbah (after a conjecture of Deligne). It is also a…

Algebraic Geometry · Mathematics 2007-05-23 Joerg Schuermann

In this paper we propose a new model of random graph directed fractals that extends the current well-known model of random graph directed iterated function systems, $V$-variable attractors, and fractal and Mandelbrot percolation. We study…

Metric Geometry · Mathematics 2019-12-23 Sascha Troscheit

We consider in this paper an area functional defined on submanifolds of fixed degree immersed into a graded manifold equipped with a Riemannian metric. Since the expression of this area depends on the degree, not all variations are…

Differential Geometry · Mathematics 2021-12-21 Giovanna Citti , Gianmarco Giovannardi , Manuel Ritoré

We study the Rouquier dimension of wrapped Fukaya categories of Liouville manifolds and pairs, and apply this invariant to various problems in algebraic and symplectic geometry. On the algebro-geometric side, we introduce a new method based…

Symplectic Geometry · Mathematics 2022-11-16 Shaoyun Bai , Laurent Côté

Let $(M,\omega_M)$ be a monotone or negatively monotone symplectic manifold, or a Weinstein manifold. One can construct an "action" of $H^1(M,\mathbb{G}_m)$ on the Fukaya category (wrapped Fukaya category in the exact case) that reflects…

Symplectic Geometry · Mathematics 2021-09-28 Yusuf Barış Kartal

We show that a class of $L$-loop conformal ladder graphs correspond to twisted partition functions of free massive complex scalars in $d=2L+1$ dimensions. The graphs arise as four-point functions in certain two- and four-dimensional…

High Energy Physics - Theory · Physics 2024-06-10 Manthos Karydas , Songyuan Li , Anastasios C. Petkou , Matthieu Vilatte

We construct graph selectors for compact exact Lagrangians in the cotangent bundle of an orientable, closed manifold. The construction combines Lagrangian spectral invariants developed by Oh and results by Abouzaid about the Fukaya category…

Symplectic Geometry · Mathematics 2022-07-12 Lino Amorim , Yong-Geun Oh , Joana Oliveira dos Santos

We use the manifestly conformally invariant description of a Lorentzian conformal structure in terms of a parabolic Cartan geometry in order to introduce a superalgebra structure on the space of twistor spinors and normal conformal vector…

Differential Geometry · Mathematics 2015-06-22 Andree Lischewski