## Introductory Modern Algebra: A Historical ApproachPresenting a dynamic new historical approach to the study of abstract algebra Much of modern algebra has its roots in the solvability of equations by radicals. Most introductory modern algebra texts, however, tend to employ an axiomatic strategy, beginning with abstract groups and ending with fields, while ignoring the issue of solvability. This book, by contrast, traces the historical development of modern algebra from the Renaissance solution of the cubic equation to Galois's expositions of his major ideas. Professor Saul Stahl gives readers a unique opportunity to view the evolution of modern algebra as a consistent movement from concrete problems to abstract principles. By including several pertinent excerpts from the writings of mathematicians whose works kept the movement going, he helps students experience the drama of discovery behind the formulation of pivotal ideas. Students also develop a more immediate and well-grounded understanding of how equations lead to permutation groups and what those groups can tell us about multivariate functions and the 15-puzzle. To further this understanding, Dr. Stahl presents abstract groups as unifying principles rather than collections of "interesting" axioms. This fascinating, highly effective alternative to traditional survey-style expositions sets a new standard for undergraduate mathematics texts and supplies a firm foundation that will continue to support students' understanding of the subject long after the course work is completed. An Instructor's Manual presenting detailed solutions to all the problems in the book is available upon request from the Wiley editorial department. |

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### Contents

Complex Numbers | 2 |

Solutions of Equations | 47 |

Modular Arithmetic | 57 |

Copyright | |

8 other sections not shown

### Common terms and phrases

addition algebraic expression argument associated assume called Cartesian CHAPTER clear coefficients commutative complex numbers composition configuration congruence Consequently Consider consists constructible contains Corollary cosets cube cycle cyclic define denote distinct divides divisible elements elements of G equal equation example Exercises exist expression fact factor field Figure Find finite follows formula function Galois field GF(p given greatest common divisor group G Hence holds identity induction irreducible isomorphic known Lemma mathematical method multiplicative inverse nonzero elements normal subgroup obtained operation permutations polynomial positive integer powers prime primitive proof properties Proposition Prove quadratic question radicals rational real numbers regular relatively prime respectively root of unity Similarly solution Solve square statement subgroup subgroup of G substitutions Suppose symmetries Theorem theory true values variables variants Write yields zero