Rotman, Joseph J. An introduction to the theory of groups. 4th ed. (English) Zbl 0810.20001 Graduate Texts in Mathematics. 148. New York, NY: Springer-Verlag. xiv, 513 p. (1995). Although there are again several changes in the organization and the contents of this fourth edition, there is hardly anything that could be said beyond the things mentioned in the reviews Zbl 0123.020 of the first and Zbl 0576.20001 of the third edition. Reviewer: R.Rudolph (Berlin) Cited in 3 ReviewsCited in 320 Documents MSC: 20-01 Introductory exposition (textbooks, tutorial papers, etc.) pertaining to group theory Keywords:introduction; theory of groups Citations:Zbl 0123.020; Zbl 0576.20001 PDF BibTeX XML Cite \textit{J. J. Rotman}, An introduction to the theory of groups. 4th ed. New York, NY: Springer-Verlag (1995; Zbl 0810.20001) Online Encyclopedia of Integer Sequences: Infinite square array: row 1 is the positive integers 1, 2, 3, ..., and on any subsequent row n, n is moved to the front: n, 1, ..., n-1, n+1, n+2, ... Integers m such that every group of order m is not simple.