分次反单本原根

本文给出分次情形的反单本原根SJGG,当群G满足|G|<∞,证明了SJG=SJref=SJG,其中SJref和SJG分别表示反射反单本原根和限制反单本原根.而且讨论了SJG的分次补根.     

有限维路代数的K_1群

本文通过计算有限维路代数k△的单位群和单位群的阿贝尔化,完全刻划了 任意域上有限维路代数的K1群.     

POINCAR SERIES AND AN APPLICATION TO WEYL ALGEBRAS

Let A n be the n-th Weyl algebra over a field of characteristic 0 and M a finitely generated module over A n . By further exploring the relationship between the Poincar′e series and the dimension and the multiplicity of M , we are able to prove that the tensor product of two finitely generated modules over A n has the multiplicity equal to the product of the multiplicities of both modules. It turns out that we can compute the dimensions and the multiplicities of some homogeneous subquotient modules of A n .     

Yanglg-Baxter方程的解与量子Yang一BaxterH一余模(英)

设H是域k上的Hopf代数.本文首先讨论了量子Yang-BaxterH-余模与Yang-Baxter方程的解的关系;然后作为应用,给出了任意Hopf代数上Yang-Baxter方程的一个解.     

正反幂等元和差的可逆性

研究在一个有单位元的环中,将幂等元的和与差的可逆性的一些已知结果,推广到正反幂等元的和与差可逆性上,并在矩阵环中得到一些运用.     

量子代数${\cal U}_q(f(K,H))$的量子伴随作用

Let H = uq（sl（2）） or u（sl（2））. By means of the standard basis of polynomial algebras, the Glebsch-Gordan formula and quantum Clebsch-Gordan formula are proved by a unified method, and the explicit formula of the decomposition of V（1）^n into the direct sum of simple modules is given in this paper.     

Yang-Baxter方程的解与量子Yang-Baxter H-余模

设Ｈ是域ｋ上的Ｈｏｐｆ代数。本文首先讨论了量子Ｙａｎｇ－Ｂａｘｔｅｒ Ｈ－余模与Ｙａｎｇ－Ｂａｘｔｅｒ方程的解的关系；然后作为应用，给出了任意Ｈｏｐｆ代数上Ｙａｎｇ－Ｂａｘｔｅｒ方程的一个解。     

Poincaré series and an application to Weyl algebras

Let A n be the n-th Weyl algebra over a field of characteristic 0 and M a finitely generated module over A n . By further exploring the relationship between the Poincar′e series and the dimension and the multiplicity of M , we are able to prove that the tensor product of two finitely generated modules over A n has the multiplicity equal to the product of the multiplicities of both modules. It turns out that we can compute the dimensions and the multiplicities of some homogeneous subquotient modules of A n .     

The Relative Properties of Graded Ring R and Smash Product R # G

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QUANTUM COMODULE APPROACH THE SOLUTION OF THE QUANTUM YANG-BAXTER EQUATION

1Intr0ducti0nThegreatattentiontotheQuantumYangBaxterEquation(QYBE)wasfirstlystimulatedbytheinversescatteringpr0blemmethodl5'6].Thenitturnedoutthatmanyofothermathe-maticalobjectsandphysicalm0delsareconnectedwiththeQYBE.Attemptstofindsoluti0nsoftheQYBEinasystematicwayhaveledtothetheoryofquantumgroups[61,andmanypapersaredev0tedtotheconstructionofthesolution,e.g.,8ee[7-10]-Inthispaper,wereviewananaloguetoquantumYang-Baxtermodule['1'1,thatis,quan-tumcomodule.wedevelopsolution8oftheQYBEaPp…