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For any closed complex manifold $X$, we calculate the Poincar\'{e} and Hodge polynomials of the delocalized equivariant cohomology $H^*(X^n, S_n)$ with a grading specified by physicists. As a consequence, we recover a special case of a…

Differential Geometry · Mathematics 2007-05-23 Jian Zhou

We prove a Poincar\'e duality for the Chow rings of smooth fans whose support are tropical linear spaces. As a consequence, we show that cycles and cocycles on tropical manifolds are Poincar\'e dual to each other. This allows us to define…

Algebraic Geometry · Mathematics 2021-04-07 Andreas Gross , Farbod Shokrieh

We show that a homotopy equivalence between manifolds induces a correspondence between their spin^c-structures, even in the presence of 2-torsion. This is proved by generalizing spin^c-structures to Poincare complexes. A procedure is given…

Geometric Topology · Mathematics 2014-11-11 Robert E. Gompf

We explore and extend the application of homological algebra to describe quantum entanglement, initiated in arXiv:1901.02011, focusing on the Hodge-theoretic structure of entanglement cohomology in finite-dimensional quantum systems. We…

High Energy Physics - Theory · Physics 2025-12-24 Christian Ferko , Eashan Iyer , Kasra Mossayebi , Gregor Sanfey

We show the intersection of a compact almost complex subvariety of dimension $4$ and a compact almost complex submanifold of codimension $2$ is a $J$-holomorphic curve. This is a generalization of positivity of intersections for…

Differential Geometry · Mathematics 2018-08-30 Weiyi Zhang

We show that the loop homology algebras of polyhedral products of the form $(\underline{X},\underline{*})^{\mathcal{K}}$ can be written as a colimit over the flagification of $\mathcal{K}$, and obtain a similar result for the Poincar\'e…

Algebraic Topology · Mathematics 2026-04-29 Lewis Stanton , Fedor Vylegzhanin

We undertake a systematic investigation of compact aspherical manifolds with boundary; motivated by the plethora of examples in the bounded case and by the beauty of the theory in the closed case. Our main theorems give a homological…

Geometric Topology · Mathematics 2025-01-23 James F. Davis , J. A. Hillman

The proof of the combinatorial Hard Lefschetz Theorem for the ``virtual'' intersection cohomology of a not necessarily rational polytopal fan that has been presented by K. Karu completely establishes Stanley's conjectures for the…

Algebraic Geometry · Mathematics 2007-05-23 Gottfried Barthel , Jean-Paul Brasselet , Karl-Heinz Fieseler , Ludger Kaup

Fix a finite group G and an n-dimensional orthogonal G-representation V. We define the equivariant factorization homology of a V-framed smooth G-manifold with coefficients in an $E_V$-algebra using a two-sided bar construction, generalizing…

Algebraic Topology · Mathematics 2022-10-11 Foling Zou

We introduce a cup-cap duality in the Koszul calculus of N-homogeneous algebras. As an application, we prove that the graded symmetry of the Koszul cap product is a consequence of the graded commutativity of the Koszul cup product. We…

Representation Theory · Mathematics 2022-06-03 Roland Berger , Andrea Solotar

We use a vector field flow defined through a cubulation of a closed manifold to reconcile the partially defined commutative product on geometric cochains with the standard cup product on cubical cochains, which is fully defined and…

Algebraic Topology · Mathematics 2021-06-14 Greg Friedman , Anibal M. Medina-Mardones , Dev Sinha

We examine various versions of oriented cohomology and Borel-Moore homology theories in algebraic geometry and put these two together in the setting of an "oriented duality theory", a generalization of Bloch-Ogus twisted duality theory.…

K-Theory and Homology · Mathematics 2008-07-16 Marc Levine

Given a monad and a comonad, one obtains a distributive law between them from lifts of one through an adjunction for the other. In particular, this yields for any bialgebroid the Yetter-Drinfel'd distributive law between the comonad given…

Quantum Algebra · Mathematics 2015-09-07 Niels Kowalzig , Ulrich Kraehmer , Paul Slevin

We define and study a class of finite topological spaces, which model the cell structure of a space obtained by gluing finitely many Euclidean convex polyhedral cells along congruent faces. We call these finite topological spaces,…

Algebraic Topology · Mathematics 2008-07-28 Tathagata Basak

We prove a Poincare-Alexander-Lefschetz duality theorem for rational torus-equivariant cohomology and rational homology manifolds. We allow non-compact and non-orientable spaces. We use this to deduce certain short exact sequences in…

Algebraic Topology · Mathematics 2014-10-01 Christopher Allday , Matthias Franz , Volker Puppe

In this paper we address the relation between the orbifold fundamental group and the topology of the underlying space. In particular, under the assumption that the orbifold fundamental group is equal to the fundamental group of the…

Algebraic Topology · Mathematics 2017-08-09 Dmytro Yeroshkin

We prove a formula for the cup product on the l-adic cohomology of the complement of a linear subspace arrangement.

Algebraic Geometry · Mathematics 2008-11-10 Andre Chatzistamatiou

The purpose of this paper is to establish Hyodo--Kato theory with compact support for semistable schemes through rigid analytic methods. To this end we introduce several types of log rigid cohomology with compact support. moreover we show…

Algebraic Geometry · Mathematics 2024-05-09 Veronika Ertl , Kazuki Yamada

Let $T$ be the circle group and let $LT$ be its loop group. We formulate and investigate several topological aspects of the $LT$-equivariant index theory for proper $LT$-spaces, where proper $LT$-spaces are infinite-dimensional manifolds…

K-Theory and Homology · Mathematics 2020-07-20 Doman Takata

We show that for dually paired bialgebras, every comodule algebra over one of the paired bialgebras gives a comodule algebra over their Drinfeld double via a crossed product construction. These constructions generalize to working with…

Quantum Algebra · Mathematics 2020-08-18 Robert Laugwitz