Thematic Development The Core Course (Chapters 1–8) is organized around two themes: Arithmetic and Congruence
    Congruence The Congruence theme is strongly emphasized hi the development of
    quotient rings and quotient groups. Consequently,			
			
                
                
				
                dents can see more clearly that
    ideals, normal subgroups, quotient rings, and quotient groups are simply an extension
    of familiar concepts in the integers, rather than an unmotivated mystery.
    Coverage The breadth of coverage in this edition is substantially the same as in
    the preceding ones, with one minor exception.
    Useful Appendices These contain prerequisite material (e.g., logic, proof, sets,
    functions, and induction) and optional material that some instructors may wish to
    introduce (e.g., equivalence relations and the Binomial Theorem).
    Endpapers The endpapers now provide a useful catalog of symbols and                               
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