ISSN:0092-7872    

DOI:10.1080/00927879408825186

出版商:Marcel Dekker, Inc.    

年代:1994

数据来源: Taylor

ISSN:0092-7872    

DOI:10.1080/00927879408825187

出版商:Marcel Dekker, Inc.    

年代:1994

数据来源: Taylor

ISSN:0092-7872    

DOI:10.1080/00927879408825188

出版商:Marcel Dekker, Inc.    

年代:1994

数据来源: Taylor

摘要:

It is well known that the minimal dimension of a nontrivial complex representation of the Monster is realized by Griess's module of dimension 196883. We show that the corresponding p-modular reduction also realizes the minimal dimension for character¬istics p≠2,3; but in those exceptional characteristics, involves a composition factor of the minimal dimension 196882.

ISSN:0092-7872    

DOI:10.1080/00927879408825189

出版商:Marcel Dekker, Inc.    

年代:1994

数据来源: Taylor

摘要:

All proper rational actions of the additive group on complex affine three space admit equivariant trivializations with quotient isomorphic to complex two space. An example of an additive group action on complex seven space with a nonfmitely generated ring of invariants is presented.

ISSN:0092-7872    

DOI:10.1080/00927879408825190

出版商:Marcel Dekker, Inc.    

年代:1994

数据来源: Taylor

ISSN:0092-7872    

DOI:10.1080/00927879408825191

出版商:Marcel Dekker, Inc.    

年代:1994

数据来源: Taylor

摘要:

After Drinfe'd and Jimbo construction [3,7] of quantized universal envelop¬ing algebra associated to each complex simple Lie algebra, larger classes of quasitriangular Hopf algebras as been founded [1,12] and studied [8]. We prove that the multiparameter quantum group defined by Reshetikhin and De Concini-Kac-Procesi are indeed equivalent. Besides we write this algebra as the quantum double of a Borel-type sub-Hopf-algebra

ISSN:0092-7872    

DOI:10.1080/00927879408825192

出版商:Marcel Dekker, Inc.    

年代:1994

数据来源: Taylor

摘要:

Abstract We define quasiconvexity cone Qcone(τ) over an infinite hyperbolic (in the sense of Gromov) group τ as the set of conjugacy classes of infinite quasiconvex subgroups H⊂τ and show that the abelian group of Qcone(τ)-divisors, i.e. finite sums of points from Qcone(τ) with integer coefficients, can be equipped with a natural structure of commutative associative ring with identity. Euler characteristic can be considered as a rational-valued function on Qcone(τ). This approach gives another point of view on the strengthened form of Hanna Neumann's conjecture on the maximal rank of the intersection of two finitely generated subgroups of the free group on two generators.

ISSN:0092-7872    

DOI:10.1080/00927879408825193

出版商:Marcel Dekker, Inc.    

年代:1994

数据来源: Taylor

ISSN:0092-7872    

DOI:10.1080/00927879408825194

出版商:Marcel Dekker, Inc.    

年代:1994

数据来源: Taylor

ISSN:0092-7872    

DOI:10.1080/00927879408825195

出版商:Marcel Dekker, Inc.    

年代:1994

数据来源: Taylor