霍普夫代数（英文版） [Hopf Algebras] 下载 mobi epub pdf 电子书 2024

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If for instance， we replace the finite group G in the above argumentby a topological group and k by the field of real numbers or the field ofcomplex numbers， or if we take G to be an algebraic group over analgebraically closed field k and A is replaced by the k-algebra of allcontinuous representative functions or of all regular functions over G，then A turns out to be a k-Hopf algebra in exactly the same manner.These algebraic systems play an important role when studying thestructure of G. Similarly， a k-Hopf algebra structure can be definednaturally on the universal enveloping algebra of a k-Lie algebra.The universal enveloping algebra of the Lie algebra of asemi-simple algebraic group turns out to be （in a sense） the dual oftheHopf algebra defined above. These constitute some of the mostnatural examples of Hopf algebras. The general structure of suchalgebraic systems has recently become a focus of interest in con-junction with its applications to the theory of algebraic groups or theGalois theory of purely inseparable extensions， and a great deal ofresearch is currently being conducted in this area.

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目录

Preface
Notation
1 Modules and algebras
1．Modules
2．Algebras over a commutative ring
3．Lie algebras
4．Semi-simple algebras
5．Finitely generated commutative algebras
2 Hopf algebras
1．Bialgcbras and Hopf algebras
2．The representative bialgebras of semigroups
3．The duality between algebras and coalgebras
4．Irreducible bialgebras
5．Irreducible cocommutative biaIgebras
3 Hopr algebras and relnmmamtlom of group
1．Comodules and bimodules
2．Bimodules and biaIgebms
3．Integrals for Hopf algebras
4．The duality theorem
4 ApplimlJons to algebraic groups
1．Affme k-varieties
2．Atone k-groups
3．Lie algebras of affme algebraic k-groups
4．Factor groups
5．Unipotent groups and solvable groups
6．Completely reducible groups
5 Applications to field theory
1．K／k—bialgebras
2．Jacobson's theorem
3．Modular extensions
Appendix：Categories and functors
A．1 Categories
A．2 Functors
A．3 Adjoint functors
A．4 Representable functors
A．5 φ-groups andφ-cogroups
References
Index

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霍普夫代数（英文版） [Hopf Algebras] 下载 mobi epub pdf txt 电子书 格式

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