扭Heisenberg-Virasoro代数上Hom-李代数结构

Hom-李代数是一类满足反对称和Hom-Jacobi等式的非结合代数.扭Heisenberg-Virasoro代数是次数不超过1的微分算子代数的中心扩张,它是一类重要的无限维李代数,与一些曲线的模空间有关.文章主要研究扭Heisenberg-Virasoro代数上Hom-李代数结构,确定了扭Heisenberg-Virasoro代数上存在非平凡的Hom-李代数结构.     

Hom-弱Hopf代数上的Hom-smash余积

本文研究了在Hom-Hopf代数上引入Hom-弱Hopf代数的问题.利用建立弱左H-Hom-余模双代数的方法,获得了Hom-smash余积的代数结构,并证明了Hom-smash余积是Hom-余代数和Hom-弱Hopf代数,推广了由Molnar定义的smash余积Hopf代数.     

Hom-弱Hopf代数上的Hom-smash积

本文研究了在Hom-Hopf代数上引入Hom-弱Hop代数的问题.通过建立弱左H-模Hom-代数的方法,构造Hom-smash积,证明Hom-smash积是Hom-代数,且给出使之成为Hom-弱Hopf代数的充分条件,推广了由Bohm等人定义的弱Hop代数.     

Hom-扭曲积和Hom-扭曲余积

首先给出了对偶Hom-双代数和余对偶Hom-双代数的概念,其次构造了Hom-扭曲积和Hom-扭曲余积并讨论了他们的一些性质．     

分裂的正则双Hom-李Color代数

本文研究了任意分裂的正则双Hom-李color代数的结构.利用此种代数的根连通,得到了带有对称根系的分裂的正则双Hom-李color代数.L可以表示成L=U+ ∑[α]∈A/～ I[α],其中U是交换(阶化)子代数H的子空间,任意I[α]为L的理想,并且满足当[α]≠[β]时,[I[α],I[β]=0.在一定条件下,定...     

分裂的正则双Hom-李Color代数（英文）

本文研究了任意分裂的正则双Hom-李color代数的结构.利用此种代数的根连通,得到了带有对称根系的分裂的正则双Hom-李color代数.L可以表示成■,其中U是交换(阶化)子代数H的子空间,任意I_[α]为L的理想,并且满足当[α]≠[β]时,[I_[α],I_[β]]=0.在一定条件下,定义L的最大长度和根可积,证明L可分解为单(阶化)理想族的直和.     

Hom-李超代数的结构

类比于单李超代数的结构性质,证明了单Hom-李超代数没有任何非平凡的左(右)理想、理想.通过给出保积Hom-李超代数的若干性质,建立了保积Hom-李超代数与李超代数之间的关系.特别地,证明了正则Hom-李超代数是可解(幂零)的充要条件是其容许李超代数是可解(幂零)的,并给出了正则Hom-李超代数是单的必要条件为其容许李超代数是单的.     

Hom-Hopf 代数上的交叉积

在Hom-Hopf代数上,定义了Hom-交叉积的概念．并且,得到了它的两种特殊形式：Hom-smash积和Hom-扭积．并且,给出了Hom-扭积是Hom—Hopf代数的充要条件．     

保积Hom-李代数的结构

本文研究保积Hom-李代数的结构,给出保积Hom-李代数单、半单和可解的充要条件.     

Hom-Hopf代数的对极和Drinfel'd偶

本文证明了带有等价Hom- 范畴的Hom- 双代数是Hom-Hopf 代数, 在基本结构定理成立的前提下, 构造了对极使其成为Hom-Hopf 代数. 研究了拟三角Hom-Hopf 代数的对极, 并给出了Hom-Hopf 代数的Radford 公式. 最后, 对有限维Hom-Hopf 代数, 引入了Drinfel''d 偶的概念, 同时证明了Drinfel''d 偶是拟三角Hom-Hopf 代数.     

Rota–Baxter Hom-Lie–Admissible Algebras

We study Hom-type analogs of Rota–Baxter and dendriform algebras, called Rota–Baxter G-Hom–associative algebras and Hom-dendriform algebras. Several construction results are proved. Free algebras for these objects are explicitly constructed. Various functors between these categories, as well as an adjunction between the categories of Rota–Baxter Hom-associative algebras and of Hom-(tri)dendriform algebras, are constructed.     

Affine Yangians and deformed double current algebras in type A

We study the structure of Yangians of affine type and deformed double current algebras, which are deformations of the enveloping algebras of matrix W1+∞-algebras. We prove that they admit a PBW-type basis, establish a connection (limit construction) between these two types of algebras and toroidal quantum algebras, and we give three equivalent definitions of deformed double current algebras. We construct a Schur-Weyl functor between these algebras and rational Cherednik algebras.     

Poisson double extensions

A double Ore extension was introduced by Zhang and Zhang(2008) to study a class of ArtinShelter regular algebras. Here we give a definition of Poisson double extension which may be considered as an analogue of the double Ore extension, and show that algebras in a class of double Ore extensions are deformation quantizations of Poisson double extensions. We also investigate the modular derivations of Poisson double extensions and the relationship between Poisson double extensions and iterated Poisson polynomial extensions.Results are illustrated by examples.     

Examples of Poisson modules,I

We sketch some differential calculus on Poisson algebras and introduce a concept of module and representation on a Poisson algebras; we give examples and consider cohomologies connecting these constructions to the algebra of Poisson brackets.     

3-Lie bialgebras and 3-Lie classical Yang–Baxter equations in low dimensions

In this paper, we give low-dimensional examples of local cocycle 3-Lie bialgebras and double construction 3-Lie bialgebras which were introduced in the study of the classical Yang–Baxter equation and Manin triples for 3-Lie algebras. We give an explicit and practical formula to compute the skew-symmetric solutions of the 3-Lie classical Yang–Baxter equation (CYBE). As an illustration, we obtain all skew-symmetric solutions of the 3-Lie CYBE in complex 3-Lie algebras of dimensions 3 and 4 and then the induced local cocycle 3-Lie bialgebras. On the other hand, we classify the double construction 3-Lie bialgebras for complex 3-Lie algebras in dimensions 3 and 4 and then give the corresponding eight-dimensional pseudo-metric 3-Lie algebras.     

Notes on piecewise-Koszul algebras

The relationships between piecewise-Koszul algebras and other “Koszul-type” algebras are discussed. The Yoneda-Ext algebra and the dual algebra of a piecewise-Koszul algebra are studied, and a sufficient condition for the dual algebra A ^! to be piecewise-Koszul is given. Finally, by studying the trivial extension algebras of the path algebras of Dynkin quivers in bipartite orientation, we give explicit constructions for piecewise-Koszul algebras with arbitrary “period” and piecewise-Koszul algebras with arbitrary “jump-degree”.     

Twisted Comodule Algebras and the Generalized Quantum Double

In this article we show that the notion of twisted comodule algebras is a generalization of Drinfeld's cocycle twisting construction of bialgebras or Hopf algebras, and that several other twisting constructions, such as Ferrer's twisting product and Lu's one-sided twisting, are also special examples of twisted comodule algebras. Some general properties on twisted comodule algebras are investigated, and applications to the generalized quantum double are given.     

Berezin's quantization on flag manifolds and spherical modules

We show that the theory of spherical Harish-Chandra modules naturally gives rise to Berezin's symbol quantization on generalized flag manifolds. It provides constructions of symbol algebras and of their representations for covariant and contravariant symbols, and also for symbols which so far have no explicit definition. For all these symbol algebras we give a general proof of the correspondence principle.