This work is supported by Heilongjiang Provincial Natural Science Foundation of China(YQ2020A005);Natural Science Foundation of China(12061029).
Over a field of characteristic p>0,the first cohomology of the orthogonal symplectic Lie superalgebra osp(1,2)with coefficients in baby Verma modules and simple modules is determined by use of the weight space decompo...
The author was supported by a grant by Conicet,Consejo Nacional de Investigaciones Cientificas y Técnicas(Argentina).Special thanks to my teacher Victor Kac.
We define the cohomology of associative H-pseudoalgebras,and we show that it describes module extensions,abelian pseudoalgebra extensions,and pseudoalgebra first-order deformations.The same results for the special cas...
The first author(Y.Liu)was supported by the NSF of Heilongjiang Province of China(YQ2020A005);The second author(W.D.Liu)was supported by the NSF of China(12061029);the NSF of Hainan Province of China(120RC587).
Suppose that L is a Lie superalgebra over a field F of characteristic different from 2 and 3.In this paper,the so-called 5-sequence of cohomology for a central extension of L is constructed and is proved to be exact.M...
Supported by the National Science Foundation of China(Nos.11047030 and 11771122).
A Bihom-Lie algebra is a generalized Hom-Lie algebra endowed with two commuting multiplicative linear maps.In this paper,we study representations of Bihom-Lie algebras.In particular,derivations,central extensions,deri...
supported by the NSF of China(11671069,11771212);Qing Lan Project of Jiangsu Province and Natural Science Foundation of Jiangsu Province(BK20211358);supported by the NSF of China(11971225,11901341);Shandong Provincial Natural Science Foundation(ZR2019QA015);supported by the National Natural Science Foundation of China(11901190,11671221);the Hunan Provincial Natural Science Foundation of China(2018JJ3205);the Scientific Research Fund of Hunan Provincial Education Department(19B239).
Let(C,E,s)be an extriangulated category with a proper classξof E-triangles.We study complete cohomology of objects in(C,E,s)by applyingξ-projective resolutions andξ-injective coresolutions constructed in(C,E,s).Van...
The work was sponsored by ZJNSF(No.LY17A010015);NNSFC(No.11871421).
In this article,we compute cohomology groups of the semisimple Lie conformal algebra S=Vir × Cur g with coefficients in its irreducible modules for a finite-dimensional simple Lie algebra g.
In this paper we study the homology and cohomology groups of the super Schrodinger algebra S(1/1)in(1+l)-dimensional spacetime.We explicitly compute the homology groups of S(1/1)with coefficients in the trivial module...
Let (R, m) be a relative Cohen–Macaulay local ring with respect to an ideal a of R and set c to be ht a. We investigate some properties of the Matlis dual of the R-module H^ca(R), and we show that such modules behave...
We study finite group actions on Leibniz algebras, and define equivariant cohomology groups associated to such actions. We show that there exists a cup-product operation on this graded cohomology, which makes it a gra...
In this note we consider 2-step nilpotent Lie algebras and give a criterion for the rigidity of this class in the variety N2n of 2-step nilpotent Lie algebras of dimension n. We apply this criterion to prove that ever...