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We study the Poincar\'e series of the mixed and pure trace rings of generic matrices. These series are known to be rational functions. We obtain an explicit formula in lowest terms in the case of $2\times2$ matrices; a denominator, which we…

Rings and Algebras · Mathematics 2022-09-07 Allan Berele

If a closed orientable manifold (resp. rational Poincar\'e duality space) $X$ receives a map $Y \to X$ from a formal manifold (resp. space) $Y$ that hits a fundamental class, then $X$ is formal. The main technical ingredient in the proof…

Algebraic Topology · Mathematics 2023-06-22 Aleksandar Milivojevic , Jonas Stelzig , Leopold Zoller

We calculate the tropical Dolbeault cohomology for the analytifications of the projective line and Mumford curves over non-archimedean fields. We show that the cohomology satisfies Poincar\'e duality and behaves analogously to the…

Algebraic Geometry · Mathematics 2018-01-01 Philipp Jell , Veronika Wanner

In earlier work we presented necessary conditions for a fundamental triple to be that of a 3-dimensional Poincar\'e duality pair with aspherical boundary components. We provide a construction which shows that the necessary conditions are…

Algebraic Topology · Mathematics 2022-09-07 Beatrice Bleile

We introduce the class of \textit{Generalized Poincar\'{e}-Duality groups}: i.e, pro-$p$ groups of infinite rank which satisfy a Poincar\'{e}-duality. We prove some basic properties of Generalized Poincar\'{e}-Duality groups, and show that…

Group Theory · Mathematics 2024-11-14 Tamar Bar-On

This article handles in a short manner a few Laplace transform pairs and some extensions to the basic equations are developed. They can be applied to a wide variety of functions in order to find the Laplace transform or its inverse when…

General Mathematics · Mathematics 2014-02-13 Henrik Stenlund

Given r>=n quasi-homogeneous polynomials in n variables, the existence of a certain duality is shown and explicited in terms of generalized Morley forms. This result, that can be seen as a generalization of [3,corollary 3.6.1.4] (where this…

Commutative Algebra · Mathematics 2007-05-23 Jean-Pierre Jouanolou

We study several duality isomorphisms between equivariant bivariant K-theory groups, generalising Kasparov's first and second Poincare duality isomorphisms. We use the first duality to define an equivariant generalisation of Lefschetz…

K-Theory and Homology · Mathematics 2011-05-03 Heath Emerson , Ralf Meyer

In the paper new representations are obtained for duals and dual hulls of the classes of analytic functions. The Ruscheweyh duality principle is shown to hold under somewhat weaker assumptions. For a compact class of functions its subclass…

Complex Variables · Mathematics 2007-05-23 I. Nezhmetdinov

In this note we discuss dual pairs in Dirac geometry. We show that this notion appears naturally when studying the problem of pushing forward a Dirac structure along a surjective submersion, and we prove a Dirac-theoretic version of…

Symplectic Geometry · Mathematics 2017-10-17 Pedro Frejlich , Ioan Marcut

We develop the algebraic formalism of the formal ternary laws of C. Walter and we compare them to Buchstaber's 2-valued formal group laws. We also compute the "elementary" formal ternary laws (after inverting 2) using a computer program…

K-Theory and Homology · Mathematics 2022-06-23 David Coulette , Frédéric Déglise , Jean Fasel , Jens Hornbostel

Results providing conditions on a family of integro-differential operators to determine a formal automorphism are established. Equivalently, the problem can be read in terms of existence and uniqueness of formal solutions of Cauchy problems…

Complex Variables · Mathematics 2025-02-11 Alberto Lastra , Sławomir Michalik , Maria Suwińska

The Poincare'-Dulac normal form of a given resonant system is in general non unique; given a specific normal form, one would like to further reduce it to a simplest normal form. In this note we give an algorithm, based on the Lie algebraic…

Mathematical Physics · Physics 2007-05-23 G. Gaeta

We propose a conjectural $q$-analogue of the classical duality for iterated integrals on $\mathbb{P}^{1}$ minus four points, arising from the involutive M\"{o}bius transformation which exchanges the four marked points in pairs. To this end,…

Number Theory · Mathematics 2026-05-04 Minoru Hirose

Parafermions of order two are shown to be the fundamental tool to construct ternary superspaces related to cubic extensions of the Poincar\'e algebra

Mathematical Physics · Physics 2014-11-20 R. Campoamor-Stursberg , M. Rausch de Traubenberg

We give a short proof of the duality theorem for the reduced $L_p$-cohomology of a complete oriented Riemannian manifold.

Differential Geometry · Mathematics 2012-11-20 Vladimir Gol'dshtein , Marc Troyanov

This paper deals with fundamental properties of Poincar\'e half-maps defined on a straight line for planar linear systems. Concretely, we focus on the analyticity of the Poincar\'e half-maps, their series expansions (Taylor and…

In this article we study abstract and embedded invariants of reduced curve germs via topological techniques. One of the most important numerical analytic invariants of an abstract curve is its delta invariant. Our primary goal is to develop…

Geometric Topology · Mathematics 2020-03-17 José Ignacio Cogolludo-Agustín , Tamás László , Jorge Martín-Morales , András Némethi

In~\cite{rotvandervorst} a homology theory --Morse-Conley-Floer homology-- for isolated invariant sets of arbitrary flows on finite dimensional manifolds is developed. In this paper we investigate functoriality and duality of this homology…

Dynamical Systems · Mathematics 2015-02-04 T. O. Rot , R. C. A. M. Vandervorst

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