文件名称:域论(第二版 英文版)

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域论(第二版 英文版) 出版时间:2011年版 内容简介   《域论(第2版)(英文版)》是一部研究生水平的域论的入门书籍。每节后面都有不少练习,使得本书既是一本很好的教程,也是一本不错的参考书。本书从头开始阐述了域基本理论,如果具备本科生水平的抽象代数知识将对学习本书具有很大的帮助。本书是第二版,作者基于第一版及在运用第一版在教学过程中的经验,又将本书中的基本内容进行了改进。增加了新的练习和新的一章从历史展望角度讲述了Galois理论,通书不断涌现新话题,包括代数基本理论的证明、不可约情形的讨论、Zp上多项式因式分解的Berlekamp代数等。目次:基础;(第一部分)域扩展:多项式;域扩展;嵌入和可分性;代数独立性;(第二部分)Galois理论Ⅰ,历史回顾;Galois理论Ⅱ,理论;Galois理论Ⅲ,多项式的Galois群;域扩展作为向量空间;有限域Ⅰ,基本性质;有限域Ⅱ,附加性质;单位根;循环扩张;可解性扩张;(第三部分)二项式;二项式族。 目录 preface contents 0 preliminaries 0.1 lattices 0.2 groups 0.3 the symmetric group 0.4 rings 0.5 integral domains 0.6 unique factorization domains 0.7 principal ideal domains 0.8 euclidean domains 0.9 tensor products exercises part i-field extensions 1 polynomials 1.1 polynomials over a ring 1.2 primitive polynomials and irreducibility 1.3 the division algorithm and its consequences 1.4 splitting fields 1.5 the minimal polynomial 1.6 multiple roots 1.7 testing for irreducibility exercises 2 field extensions 2.1 the lattice of subfields of a field 2.2 types of field extensions 2.3 finitely generated extensions 2.4 simple extensions 2.5 finite extensions 2.6 algebraic extensions 2.7 algebraic closures 2.8 embeddings and their extensions. 2.9 splitting fields and normal extensions exercises 3 embeddings and separability 3.1 recap and a useful lemma 3.2 the number of extensions: separable degree 3.3 separable extensions 3.4 perfect fields 3.5 pure inseparability 3.6 separable and purely inseparable closures exercises 4 algebraic independence 4.1 dependence relations 4.2 algebraic dependence 4.3 transcendence bases 4.4 simple transcendental extensions exercises part ii---galois theory 5 galois theory i: an historical perspective 5.1 the quadratic equation 5.2 the cubic and quartic equations 5.3 higher-degree equations 5.4 newton's contribution: symmetric polynomials 5.5 vandermonde 5.6 lagrange 5.7 gauss 5.8 back to lagrange 5.9 galois 5.10 a very brief look at the life of galois 6 galois theory i1: the theory 6.1 galois connections 6.2 the galois correspondence 6.3 who's closed? 6.4 normal subgroups and normal extensions 6.5 more on galois groups 6.6 abelian and cyclic extensions 6.7 linear disjointness exercises 7 galois theory iii: the galois group of a polynomial 7.1 the galois group of a polynomial 7.2 symmetric polynomials 7.3 the fundamental theorem of algebra. 7.4 the discriminant of a polynomial 7.5 the galois groups of some small-degree polynomials exercises 8 a field extension as a vector space 8.1 the norm and the trace *8.2 characterizing bases *8.3 the normal basis theorem exercises 9 finite fields i: basic properties 9.1 finite fields redux 9.2 finite fields as splitting fields 9.3 the subfields of a finite field. 9.4 the multiplicative structure of a finite field 9.5 the galois group of a finite field 9.6 irreducible polynomials over finite fields *9.7 normal bases *9.8 the algebraic closure of a finite field exercises 10 finite fields i1: additional properties 10.1 finite field arithmetic 10.2 the number of irreducible polynomials 10.3 polynomial functions 10.4 linearized polynomials exercises 11 the roots of unity 11.1 roots of unity 11.2 cyclotomic extensions 11.3 normal bases and roots of unity 11.4 wedderburn's theorem 11.5 realizing groups as galois groups exercises 12 cyclic extensions 12.1 cyclic extensions 12.2 extensions of degree char(f) exercises 13 solvable extensions 13.1 solvable groups 13.2 solvable extensions 13.3 radical extensions 13.4 solvability by radicals 13.5 solvable equivalent to solvable by radicals 13.6 natural and accessory irrationalities 13.7 polynomial equations exercises part iii--the theory of binomials 14 binomials 14.1 irreducibility 14.2 the galois group of a binomial 14.3 the independence of irrational numbers exercises 15 families of binomials 15.1 the splitting field 15.2 dual groups and pairings 15.3 kummer theory exercises appendix: mobius inversion partially ordered sets the incidence algebra of a partially ordered set classical mobius inversion multiplicative version of m6bius inversion references index
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