Mathematician Milnor collects 13 of his papers ranging from 1959 to 2010 on algebras and groups, the congruence subgroup problem, and algebraic K-theory and quadratic forms. Among specific topics are the structure of Hopf algebras, the growth of finitely generated solvable groups, uni-modular groups over number fields, isometries of inner product spaces, and symmetric inner product spaces over a Dedekind domain. Colleagues place the papers in the context of later developments. This is the fifth volume of his collected papers. Annotation ©2011 Book News, Inc., Portland, OR (booknews.com)