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This paper investigates the moment-angle manifolds whose cohomology ring is isomorphic to that of a connected sum of sphere products. We first give a example of moment-angle manifolds corresponding to a 4 dimentional simplicial polytope. It…

Algebraic Topology · Mathematics 2014-12-30 Feifei Fan , Liman Chen , Jun Ma , Xiangjun Wang

Using Nadler's Geometric Satake Equivalence for real reductive groups, we obtain a description of the equivariant homology of the loop space of splitting-rank symmetric spaces in terms of the relative dual group of the space. The…

Representation Theory · Mathematics 2024-09-09 John O'Brien

In this paper we explore homogeneous spaces Z=G/H of a a real reductive Lie group G with a closed connected subgroup H. The investigation concerns the decay at infinity of smooth functions on Z, and L^p-integrability of matrix coefficients.…

Representation Theory · Mathematics 2012-11-14 Bernhard Krotz , Eitan Sayag , Henrik Schlichtkrull

We describe spectral model category structures on the categories of cyclotomic spectra and $p$-cyclotomic spectra (in orthogonal spectra) with triangulated homotopy categories. We show that the functors $TR$ and $TC$ are corepresentable in…

K-Theory and Homology · Mathematics 2020-12-17 Andrew J. Blumberg , Michael A. Mandell

We prove that any arithmetic locally symmetric space is homotopy equivalent to a simplicial complex where the number of simplices is bounded linearly in the volume of the space. This settles a well-known conjecture of Gelander. The main…

Number Theory · Mathematics 2026-02-03 Mikołaj Frączyk , Sebastian Hurtado , Jean Raimbault

Let G be a real reductive algebraic group with maximal compact subgroup K, and let F be a rank r free group. Here, we summarize the construction of a natural strong deformation retraction from the space of closed orbits in Hom(F,G)/G to the…

Algebraic Topology · Mathematics 2016-09-23 Ana Casimiro , Carlos Florentino , Sean Lawton , André Oliveira

We quantize the problem considered by Bott-Samelson who applied Morse theory to any compact symmetric space $G/K$ and the associated real flag manifold $G_{\mathbb{R}}/B$ which is a real locus of a complex partial flag variety…

Symplectic Geometry · Mathematics 2021-07-19 Hanwool Bae , Chi Hong Chow , Naichung Conan Leung

This is a companion to a recent investigation of K-theoretical invariants for symmetric spaces. We introduce a new class of cycles in K-groups, which are connected to elements of an underlying root lattice. This will be needed for a…

K-Theory and Homology · Mathematics 2012-10-03 Dennis Bohle , Wend Werner

For a path-connected space X, a well-known theorem of Segal, May and Milgram asserts that the configuration space of finite points in R^n with labels in X is weakly homotopy equivalent to the n-th loop-suspension of X. In this paper, we…

Algebraic Topology · Mathematics 2014-10-01 Shingo Okuyama

Let $G$ be a connected reductive complex algebraic group. This paper is part of a project devoted to the space $Z$ of meromorphic quasimaps from a curve into an affine spherical $G$-variety $X$. The space $Z$ may be thought of as an…

Algebraic Geometry · Mathematics 2007-05-23 D. Gaitsgory , D. Nadler

An analogous construction of simplicial homotopy group for Kan complex can be applied to saturated complicial sets to give monoids. In this paper, we investigate how the construction of loop spaces of Kan complexes lifts to the complicial…

Algebraic Topology · Mathematics 2021-04-27 Ryo Horiuchi

In this paper, we determine the homotopy type of the Morse complex of certain collections of simplicial complexes by studying dominating vertices or strong collapses. We show that if $K$ contains two leaves that share a common vertex, then…

Algebraic Topology · Mathematics 2021-07-19 Connor Donovan , Maxwell Lin , Nicholas A. Scoville

We characterize H-spaces which are p-torsion Postnikov pieces of finite type by a cohomological property together with a necessary acyclicity condition. When the mod p cohomology of an H-space is finitely generated as an algebra over the…

Algebraic Topology · Mathematics 2007-05-23 Natalia Castellana , Juan A. Crespo , Jerome Scherer

This article gives a natural decomposition of the suspension of generalized moment-angle complexes or {\it partial product spaces} which arise as {\it polyhedral product functors} described below. In the special case of the complements of…

Algebraic Topology · Mathematics 2008-12-09 A. Bahri , M. Bendersky , F. R. Cohen , S. Gitler

A reductive homogeneous space $G/H$ is always diffeomorphic to the normal bundle of an orbit of a maximal compact subgroup of $G$. We prove that if $G/H$ admits compact quotients, then the sphere bundle associated to this normal bundle is…

Geometric Topology · Mathematics 2026-01-12 Fanny Kassel , Yosuke Morita , Nicolas Tholozan

Let k>2. We prove that the cotangent bundles of oriented homotopy (2k-1)-spheres S and S' are symplectomorphic only if the classes defined by S and S' agree up to sign in the quotient group of oriented homotopy spheres modulo those which…

Symplectic Geometry · Mathematics 2015-09-21 Tobias Ekholm , Thomas Kragh , Ivan Smith

We formulate and prove a new variant of the Segal Conjecture describing the group of homotopy classes of stable maps from the p-completed classifying space of a finite group G to the classifying space of a compact Lie group K as the p-adic…

Algebraic Topology · Mathematics 2007-05-23 Kari Ragnarsson

We compute the homotopy type of the space of proper d-dimensional submanifolds of ${\mathbb R}^n$ with a smooth version of the Fell topology. Our methods allow us to compute the homotopy type of the space of submanifolds with summable…

Algebraic Topology · Mathematics 2016-01-19 Federico Cantero Morán

In this paper we study a subspace of the space of Legendrian loops and we show that the injection of this space into the full loop space is an S1-equivariant homotopy equivalence. This space can be also seen as the space of zero Maslov…

Differential Geometry · Mathematics 2013-03-21 Ali Maalaoui , Vittorio Martino

We compute the homotopy type of the moduli space of flat, unitary connections over aspherical surfaces, after stabilizing with respect to the rank of the underlying bundle. Over the orientable surface M^g, we show that this space has the…

Algebraic Topology · Mathematics 2018-05-09 Daniel A. Ramras