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Let $R$ be a left-symmetric conformal algebra and $Q$ be a $\mathbb{C}[\partial]$-module. We introduce the notion of a unified product for left-symmetric conformal algebras and apply it to construct an object $\mathcal{H}^2_R(Q,R)$ to…

Rings and Algebras · Mathematics 2023-04-12 Zhongyin Xu , Yanyong Hong

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

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

Let $\alpha$ be a big class on a compact K\"ahler manifold. We prove that a decomposition $\alpha=\alpha_1+\alpha_2$ into the sum of a modified nef class $\alpha_1$ and a pseudoeffective class $\alpha_2$ is the divisorial Zariski…

Algebraic Geometry · Mathematics 2015-06-17 Eleonora Di Nezza , Enrica Floris , Stefano Trapani

The holomorph of a discrete group $G$ is the universal semi-direct product of $G$. In chapter 1 we describe why it is an interesting object and state main results. In chapter 2 we recall the classical definition of the holomorph as well as…

Group Theory · Mathematics 2007-05-23 Maria S. Voloshina

We introduce a new multiplication for the polytope algebra, defined via the intersection of polytopes. After establishing the foundational properties of this intersection product, we investigate finite-dimensional subalgebras that arise…

Combinatorics · Mathematics 2025-05-12 Thomas Wannerer

This paper exhibits a multiplicative and minimal cellular complex which allows explicit and complete (co)homological calculations for the symmetric products of a finite two dimensional CW complex. By considering cohomology, we observe that…

Algebraic Topology · Mathematics 2007-05-23 Sadok Kallel , Paolo Salvatore

The decomposition into interaction subspaces is a hierarchical decomposition of the spaces of cylindrical functions of a finite product space, also called factor spaces. It is an important construction in graphical models and a standard way…

Rings and Algebras · Mathematics 2021-05-25 Grégoire Sergeant-Perthuis

The purpose of this paper is to extend the cohomology and conformal derivation theories of the classical Lie conformal algebras to Lie conformal superalgebras. Firstly, we construct the semidirect product of a Lie conformal superalgebra and…

Rings and Algebras · Mathematics 2017-11-23 Jun Zhao , Liangyun Chen , Lamei Yuan

In this paper we study the cohomology of smooth projective complex surfaces $S$ of general type with invariants $p_g = q = 2$ and surjective Albanese morphism. We show that on a Hodge-theoretic level, the cohomology is described by the…

Algebraic Geometry · Mathematics 2019-01-03 Johan Commelin , Matteo Penegini

Following Feigin and Fuchs, we compute the first cohomology of the Lie superalgebra $\mathcal{K}(1)$ of contact vector fields on the (1,1)-dimensional real superspace with coefficients in the superspace of linear differential operators…

Representation Theory · Mathematics 2010-04-13 Imed Basdouri , Mabrouk Ben Ammar , Nizar Ben Fraj , Maha Boujelbene , Kaouthar Kammoun

Generalizing a theorem of Macdonald, we show a formula for the mixed Hodge structure on the cohomology of the symmetric products of bounded complexes of mixed Hodge modules by showing the existence of the canonical action of the symmetric…

Algebraic Geometry · Mathematics 2012-04-03 Laurentiu Maxim , Morihiko Saito , Joerg Schuermann

For a holomorphic function f on a complex manifold M we explain in this article that the distribution associated to |f | 2$\alpha$ (Log|f | 2) q f --N by taking the corresponding limit on the sets {|f | $\ge$ $\epsilon$} when $\epsilon$…

Algebraic Geometry · Mathematics 2022-04-05 Daniel Barlet

The output of persistent homology is an algebraic object called a persistence module. This object admits a decomposition into a direct sum of interval persistence modules described entirely by the barcode invariant. In this paper we…

Algebraic Topology · Mathematics 2023-07-10 Živa Urbančič , Jeffrey Giansiracusa

Let $X$ be a compact Kaehler manifold of dimension $k$ and $T$ be a positive closed current on $X$ of bidimension $(p,p)$ ($1\leq p < k-1$). We construct a continuous linear transform $\mathcal{L}_p(T)$ of $T$ which is a positive closed…

Complex Variables · Mathematics 2019-12-18 Gabriel Vigny

Given an $n$-tuple of positive real numbers $\alpha$ we consider the hyperpolygon space $X(\alpha)$, the hyperk\"{a}hler quotient analogue to the K\"ahler moduli space of polygons in $\mathbb{R}^3$. We prove the existence of an isomorphism…

Algebraic Geometry · Mathematics 2015-03-17 Leonor Godinho , Alessia Mandini

We compare the sheaf-theoretic and singular chain versions of Poincare duality for intersection homology, showing that they are isomorphic via naturally defined maps. Similarly, we demonstrate the existence of canonical isomorphisms between…

Geometric Topology · Mathematics 2022-01-05 Greg Friedman , James E. McClure

We compute the product and coproduct structures on the fixed point Floer homology of iterations on the single Dehn twist, subject to some mild topological restrictions. We show that the resulting product and coproduct structures are…

Symplectic Geometry · Mathematics 2025-11-05 Yuan Yao , Ziwen Zhao

For a general open set, we characterize the compactness of the embedding $W^{1,p}_0\hookrightarrow L^q$ in terms of the summability of its torsion function. In particular, for $1\le q<p$ we obtain that the embedding is continuous if and…

Analysis of PDEs · Mathematics 2015-06-16 Lorenzo Brasco , Berardo Ruffini

Given a unital action $\theta $ of an inverse monoid $S$ on an algebra $A$ over a filed $K$ we produce (co)homology spectral sequences which converge to the Hochschild (co)homology of the crossed product $A\rtimes_\theta S$ with values in a…

Rings and Algebras · Mathematics 2026-02-24 Mikhailo Dokuchaev , Mykola Khrypchenko , Juan Jacobo Simón