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This paper develops the foundations of Hom-heaps, Hom-trusses, and Hom-braces as natural Hom-type analogues of their classical counterparts. We establish the correspondence between Hom-heaps and Hom-groups, showing that the retract of a…

Rings and Algebras · Mathematics 2025-09-03 Tarik Anowar , Ripan Saha , Sayan Thokdar

We describe the structure of the algebraic group of automorphisms of all simple finite dimensional Lie superalgebras. Using this and \'etale cohomology considerations, we list all different isomorphism classes of the corresponding twisted…

Rings and Algebras · Mathematics 2007-05-23 Dimitar Grantcharov , Arturo Pianzola

In this paper we study the algebra of graph invariants, focusing mainly on the invariants of simple graphs. All other invariants, such as sorted eigenvalues, degree sequences and canonical permutations, belong to this algebra. In fact,…

Combinatorics · Mathematics 2008-01-30 Tomi Mikkonen , Xavier Buchwalder

In this paper we describe central extensions (up to isomorphism) of all complex null-filiform and filiform associative algebras.

Rings and Algebras · Mathematics 2020-04-03 Iqboljon Karimjanov , Ivan Kaygorodov , Manuel Ladra

In this paper, we first introduce the notion of Hom-left-symmetric conformal bialgebras and show some nontrivial examples. Also, we present construction methods of matched pairs of Hom-Lie conformal algebras and Hom-left-symmetric conformal…

Rings and Algebras · Mathematics 2018-07-31 Shuangjian Guo , Xiaohui Zhang , Shengxiang Wang

The main purpose of this paper is to provide a full cohomology of a Hom-pre-Lie algebra with coefficients in a given representation. This new type of cohomology exploit strongly the Hom-type structure and fits perfectly with simultaneous…

Mathematical Physics · Physics 2021-11-23 Shanshan Liu , Abdenacer Makhlouf , Lina Song

It is proved that isomorphisms between algebras of smooth functions on Hausdorff smooth manifolds are implemented by diffeomorphisms. It is not required that manifolds are second countable nor paracompact. This solves a problem stated by A.…

Differential Geometry · Mathematics 2007-05-23 Janusz Grabowski

This is the first paper in a series of eight where in the first three we develop a systematic approach to the geometric algebras of multivectors and extensors, followed by five papers where those algebraic concepts are used in a novel…

Differential Geometry · Mathematics 2007-05-23 A. M. Moya , V. V. Fernandez , W. A. Rodrigues

The main purpose of this paper is to prove the generalized Hyers-Ulam-Rassias stability of J*-homomorphisms between J*-algebras.

Functional Analysis · Mathematics 2021-07-23 Choonkill Baak , Mohammad Sal Moslehian

In this note, we outline the general development of a theory of symmetric homology of algebras, an analog of cyclic homology where the cyclic groups are replaced by symmetric groups. This theory is developed using the framework of crossed…

Algebraic Topology · Mathematics 2007-11-05 Shaun Ault , Zbigniew Fiedorowicz

We establish an analogue of the fundamental theorem of algebra for polynomial matrix equations, in which the matrices-coefficients and unknown matrix are assumed to be circulant matrices.

Commutative Algebra · Mathematics 2024-12-06 Vyacheslav M. Abramov

This paper surveys, and in some cases generalises, many of the recent results on homomorphisms and the higher Ext groups for q-Schur algebras and for the Hecke algebra of type A. We review various results giving isomorphisms between Ext…

Representation Theory · Mathematics 2007-05-23 Anton Cox , Alison Parker

We determine all the ideals of the homological Goldman Lie algebra, which reflects the structure of an oriented surface.

Geometric Topology · Mathematics 2012-07-18 Kazuki Toda

Given two unital C*-algebras $A$ and $B$, we study, when it exists, the universal unital $C^*$-algebra $\mathcal{U}(A,B)$ generated by the coefficients of a unital $*$-homomorphism $\rho\,:\, A\rightarrow B\otimes\mathcal{U}(A,B)$. When $B$…

Operator Algebras · Mathematics 2024-12-02 Pierre Fima , Malay Mandal , Issan Patri

We calculate the rational cohomology of the classifying space of the diffeomorphism group of the manifolds $U_{g,1}^n:= \#^g(S^n \times S^{n+1})\setminus \mathrm{int}{D^{2n+1}}$, for large $g$ and $n$, up to approximately degree $n$. The…

Algebraic Topology · Mathematics 2024-02-21 Johannes Ebert , Jens Reinhold

We present the general construction of the $U$-projector (the homomorphism of the algebra into its field of $U$-invariants identical on the subalgebra of $U$-invariants). It is shown how to apply $U$-projector to find the systems of free…

Representation Theory · Mathematics 2021-06-02 K. A. Vyatkina , A. N. Panov

We survey decades of research identifying the (co)homology of configuration spaces with Lie algebra (co)homology. The different routes to this one proto-theorem offer genuinely different explanations of its truth, and we attempt to convey…

Algebraic Topology · Mathematics 2025-08-21 Ben Knudsen

In this paper, we consider compatible Hom-associative algebras as a twisted version of compatible associative algebras. Compatible Hom-associative algebras are characterized as Maurer-Cartan elements in a suitable bidifferential graded Lie…

Rings and Algebras · Mathematics 2022-10-25 Taoufik Chtioui , Ripan Saha

In this paper, we generalize the fundamental theorems of functional analysis to the framework of bicomplex topological modules.

Functional Analysis · Mathematics 2011-09-16 Rajeev Kumar , Romesh Kumar , Dominic Rochon

The aim of this paper is to give new representation theorems for extended contact algebras. These representation theorems are based on equivalence relations.

Logic in Computer Science · Computer Science 2020-09-22 Philippe Balbiani , Tatyana Ivanova
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