This book is an informal and readable introduction to higher algebra at the post-calculus level. The concepts of ring and field are introduced through study of the familiar examples of the integers and polynomials. A strong emphasis on congruence classes leads in a natural way to finite groups and finite fields. The new examples and theory are built in a well-motivated fashion and made relevant by many applications--to cryptography, coding, integration, history of mathematics, and especially to elementary and computational number theory. The later chapters include expositions of Rabiin's probabilistic primality test, quadratic reciprocity, and the classification of finite fields. Over 900 exercises, ranging from routine examples to extensions of theory, are found throughout the book; hints and answers for many of them are included in an appendix.
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其实读的是1979年版...直接讲Rings&Fields这种特例，果然很concrete= =
评分其实读的是1979年版...直接讲Rings&Fields这种特例，果然很concrete= =
评分其实读的是1979年版...直接讲Rings&Fields这种特例，果然很concrete= =
评分其实读的是1979年版...直接讲Rings&Fields这种特例，果然很concrete= =
评分其实读的是1979年版...直接讲Rings&Fields这种特例，果然很concrete= =
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