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We construct models for the classifying spaces of coabelian subgroups of right-angled Coxeter groups as homotopy orbit spaces of real moment-angle complexes, generalizing well-known models for the classifying space of a right-angled Coxeter…

Algebraic Topology · Mathematics 2026-04-24 Steven Amelotte , Vladimir Gorchakov

For a broad class of Frechet-Lie supergroups we prove that there exists a correspondence between positive definite smooth superfunctions and matrix coefficients of unitary representations. We also give a characterization of linear…

Representation Theory · Mathematics 2012-08-14 Karl-Hermann Neeb , Hadi Salmasian

In this paper we study sums of Dirichlet series whose coefficients are terms of the Thue-Morse sequence and variations thereof. We find closed-form expressions for such sums in terms of known constants and functions including the Riemann…

Number Theory · Mathematics 2022-11-28 László Tóth

In this note we study the problem of conformally flat structures bounding conformally flat structures and show that the eta invariants give obstructions. These lead us to the definition of an abelian group, the conformal cobordism group,…

Differential Geometry · Mathematics 2007-05-23 Xianzhe Dai

We introduce a notion of I-factorial quantum torsor, which consists of an integrable ergodic action of a locally compact quantum group on a type I-factor such that also the crossed product is a type I-factor. We show that any such…

Operator Algebras · Mathematics 2019-01-29 Kenny De Commer

We extend Bezrukavnikov and Finkelberg's description of the G(\C[[t]])-equivariant derived category on the affine Grassmannian to the twisted setting of Finkelberg and Lysenko. Our description is in terms of coherent sheaves on the twisted…

Representation Theory · Mathematics 2012-12-07 Bhairav Singh

The paper provides a computation of the equivariant Chow group of a rational, complete, complexity one $T$-variety

Algebraic Geometry · Mathematics 2023-05-02 Pavankumar Dighe , Vivek Mohan Mallick

A $q$-bic form is a pairing $V \times V \to \mathbf{k}$ that is linear in the second variable and $q$-power Frobenius linear in the first; here, $V$ is a vector space over a field $\mathbf{k}$ containing the finite field on $q^2$ elements.…

Algebraic Geometry · Mathematics 2025-04-21 Raymond Cheng

We show a Z^2-filtered algebraic structure and a "quantum to classical" principle on the torus-equivariant quantum cohomology of a complete flag variety of general Lie type, generalizing earlier works of Leung and the second author. We also…

Algebraic Geometry · Mathematics 2015-06-03 Yongdong Huang , Changzheng Li

When a torus acts on a compact oriented manifold with isolated fixed points, the equivariant localization formula of Atiyah--Bott--Berline--Vergne converts the integral of an equivariantly closed form to a finite sum over the fixed points,…

Algebraic Topology · Mathematics 2013-05-21 Loring W. Tu

Suppose given a complex projective manifold $M$ with a fixed Hodge form $\Omega$. The Bohr-Sommerfeld Lagrangian submanifolds of $(M,\Omega)$ are the geometric counterpart to semi-classical physical states, and their geometric quantization…

Symplectic Geometry · Mathematics 2009-11-11 Marco Debernardi , Roberto Paoletti

We prove Manin's conjecture for bi-equivariant compactifications of unipotent groups.

Number Theory · Mathematics 2015-01-13 Joseph Shalika , Yuri Tschinkel

We compute the eta function $\eta(s)$ and its corresponding $\eta$-invariant for the Atiyah-Patodi-Singer operator $\mathcal{D}$ acting on an orientable compact flat manifold of dimension $n =4h-1$, $h\ge 1$, and holonomy group $F\simeq…

Differential Geometry · Mathematics 2017-02-24 Ricardo A. Podestá

In this article, we will show that the category of biset functors can be regarded as a reflective monoidal subcategory of the category of Mackey functors on the 2-category of finite groupoids. This reflective subcategory is equivalent to…

Category Theory · Mathematics 2016-01-26 Hiroyuki Nakaoka

We show that the isotropy action of a homogeneous space $G/K$, where $G$ and $K$ are compact, connected Lie groups and $K$ is defined by an automorphism on $G$, is equivariantly formal and that $(G, K)$ is a Cartan pair.

Differential Geometry · Mathematics 2018-03-16 Oliver Goertsches , Sam H. Noshari

We define a new equivariant (with respect to a finite group $G$ action) version of the Poincar\'e series of a multi-index filtration as an element of the power series ring ${\widetilde{A}}(G)[[t_1, \ldots, t_r]]$ for a certain modification…

Algebraic Geometry · Mathematics 2014-05-14 A. Campillo , F. Delgado , S. M. Gusein-Zade

Let $G$ be a connected and non-necessarily compact Lie group acting on a connected manifold $M$. In this short note we announce the following result: for a $G$-invariant closed differential form on $M$, the existence of a closed equivariant…

Differential Geometry · Mathematics 2021-03-08 Camilo Arias Abad , Bernardo Uribe

Let g be a Lie bialgebra and let V be a finite-dimensional g-module. We study deformations of the symmetric algebra of V which are equivariant with respect to an action of the quantized enveloping algebra of g. In particular we investigate…

Quantum Algebra · Mathematics 2008-12-09 Sebastian Zwicknagl

We study Chevalley-Eilenberg cohomology of physically relevant Lie superalgebras related to supersymmetric theories, providing explicit expressions for their cocycles in terms of their Maurer-Cartan forms. We then include integral forms in…

High Energy Physics - Theory · Physics 2020-12-22 R. Catenacci , C. A. Cremonini , P. A. Grassi , S. Noja

In earlier work, the authors described a relation between the Poincar\'e series and the classical monodromy zeta function corresponding to a quasihomogeneous polynomial. Here we formulate an equivariant version of this relation in terms of…

Algebraic Geometry · Mathematics 2011-06-22 Wolfgang Ebeling , Sabir M. Gusein-Zade