TY - BOOK AU - Fraleigh, John B. TI - A First Course in Abstract Algebra SN - 9788185015705 U1 - 512.02 PY - 1982/// CY - New Delhi PB - Narosa KW - Algebra, Abstract N1 - pt. I. Groups. Binary operations -- Groups -- Subgroups -- Permutations I -- Permutations II -- Cyclic groups -- Isomorphism -- Direct products -- Finitely generated abelian groups -- Groups in geometry -- Groups of cosets -- Normal subgroups and factor groups -- Homomorphisms -- Series of groups -- Isomorphism theorems; proof of the Jordan-Hölder theorem -- Group action on a set -- Applications of G-sets to counting -- Sylow theorems -- Applications of the Sylow theory -- Free abelian groups -- Free groups -- Group presentations -- pt. II. Rings and fields. Rings -- Integral domains -- Some noncommutative examples -- The field of quotients of an integral domain -- Our basic goal -- Quotient rings and ideals -- Homomorphisms of rings -- Rings of polynomials -- Factorization of polynomials over a field -- Unique factorization domains -- Euclidean domains -- Gaussian integers and norms -- Introduction to extension fields -- Vector spaces -- Further algebraic structures -- Algebraic extensions -- Geometric constructions -- Automorphisms of fields -- The isomorphism extension theorem -- Splitting fields -- Separable extensions -- Totally inseparable extensions -- Finite fields -- Galois theory -- Illustrations of Galois theory -- Cyclotomic extensions -- Insolvability of the quintic ER -