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We give a geometric method for determining the cohomology groups of a polyhedral product under suitable freeness conditions or with coefficients taken in a field. This is done by considering first the special case for which the pairs of…

Algebraic Topology · Mathematics 2023-05-24 A. Bahri , M. Bendersky , F. R. Cohen , S. Gitler

We generalise the fold map for the wedge sum and use this to give a loop space decomposition of topological spaces with a high degree of symmetry. This is applied to polyhedral products to give a loop space decomposition of polyhedral…

Algebraic Topology · Mathematics 2023-11-01 Lewis Stanton

In this paper, we compute the homology group and cohomology algebra of various polyhedral product objects uniformly from the point of view of diagonal tensor product. As applications, we introduce the polyhedral product method into…

Algebraic Topology · Mathematics 2018-04-24 Qibing Zheng

Moore's Conjecture is shown to hold for generalized moment-angle complexes and a criterion is proved that determines when a polyhedral product is elliptic or hyperbolic.

Algebraic Topology · Mathematics 2019-06-26 Yanlong Hao , Qianwen Sun , Stephen Theriault

By using the loop orbifold of the symmetric product, we give a formula for the Poincar\'e polynomial of the free loop space of the Borel construction of the symmetric product. We also show that the Chas-Sullivan product structure in the…

Algebraic Topology · Mathematics 2007-05-23 Ernesto Lupercio , Bernardo Uribe , Miguel A. Xicoténcatl

We construct a family of manifolds, one for each $n\geq 2$, having a nontrivial Massey $n$-product in their cohomology. These manifolds turn out to be smooth closed 2-connected manifolds with a compact torus action called moment-angle…

Algebraic Topology · Mathematics 2017-11-15 Ivan Limonchenko

The notion of a dual polyhedral product is introduced as a generalization of Hovey's definition of Lusternik-Schnirelmann cocategory. Properties established from homotopy decompositions that relate the based loops on a polyhedral product to…

Algebraic Topology · Mathematics 2018-09-24 Stephen Theriault

Polyhedral products were defined by Bahri, Bendersky, Cohen and Gitler, to be spaces obtained as unions of certain product spaces indexed by the simplices of an abstract simplicial complex. In this paper we give a very general homotopy…

Algebraic Topology · Mathematics 2024-07-02 Daisuke Kishimoto , Ran Levi

We give $p$-local homotopy decompositions of the suspensions of real toric spaces for odd primes $p$. Our decomposition is compatible with the one given by Bahri, Bendersky, Cohen, and Gitler for the suspension of the corresponding real…

Algebraic Topology · Mathematics 2016-04-29 Suyoung Choi , Shizuo Kaji , Stephen Theriault

Dualising the construction of a polyhedral product, we introduce the notion of a polyhedral coproduct as a certain homotopy limit over the face poset of a simplicial complex. We begin a study of the basic properties of polyhedral…

Algebraic Topology · Mathematics 2025-06-04 Steven Amelotte , William Hornslien , Lewis Stanton

Topological methods have emerged as valuable tools for analyzing the structural properties of directed graphs, particularly connectome data in computational neuroscience. This paper investigates the construction of topological spaces from…

Algebraic Topology · Mathematics 2026-05-04 Pedro Conceição

We consider the problem of describing the Pontryagin algebra (loop homology) of moment-angle complexes and manifolds. The moment-angle complex Z_K is a cell complex built of products of polydiscs and tori parametrised by simplices in a…

Algebraic Topology · Mathematics 2016-04-22 Yakov Veryovkin

Multisymplectic geometry admits an operation that has no counterpart in symplectic geometry, namely, taking the product of two multisymplectic manifolds endowed with the wedge product of the multisymplectic forms. We show that there is an…

Differential Geometry · Mathematics 2016-11-30 C. S. Shahbazi , Marco Zambon

Associated to every finite simplicial complex K there is a "moment-angle" finite CW-complex, Z_K; if K is a triangulation of a sphere, Z_K is a smooth, compact manifold. Building on work of Buchstaber, Panov, and Baskakov, we study the…

Algebraic Topology · Mathematics 2013-12-17 Graham Denham , Alexander I. Suciu

We show that the Hurewicz image in the homology of a moment-angle complex, when passed through an isomorphism with the Ext-module of the corresponding Stanley-Reisner ideal, contains the linear strand of this ideal. This recovers and…

Algebraic Topology · Mathematics 2025-06-19 Steven Amelotte , Benjamin Briggs

For a commutative ring $\mathbf k$ with unit, we describe and study various differential graded $\mathbf k$-modules and $ \mathbf k$-algebras which are models for the cohomology of polyhedral products $(\underline{CX},\underline X)^K$.…

Algebraic Topology · Mathematics 2025-01-23 Martin Bendersky , Jelena Grbić

We consider families of simple polytopes $P$ and simplicial complexes $K$ well-known in polytope theory and convex geometry, and show that their moment-angle complexes have some remarkable homotopy properties which depend on combinatorics…

Algebraic Topology · Mathematics 2020-11-24 Ivan Limonchenko

In toric topology, to a simplicial complex $K$ with $m$ vertices, one associates two spaces, the moment-angle complex $\mathcal{Z}_K$ and the Davis-Januszkiewicz space $DJ_K$. These spaces are connected by a homotopy fibration…

Algebraic Topology · Mathematics 2018-07-03 Kouyemon Iriye , Daisuke Kishimoto

We study Moore's conjecture and homotopy exponents for polyhedral products. For $(\underline{CA},\underline{A})^K$ where each $A_i$ is finite and has torsion-free homology, we prove that if $(\underline{CA},\underline{A})^K$ is rationally…

Algebraic Topology · Mathematics 2026-05-12 Briony Eldridge

We give p-local homotopy decompositions of the loop spaces of compact, simply-connected symmetric spaces for quasi-regular primes. The factors are spheres, sphere bundles over spheres, and their loop spaces. As an application, upper bounds…

Algebraic Topology · Mathematics 2016-01-20 Shizuo Kaji , Akihiro Ohsita , Stephen Theriault