Items related to Fundamentals of Group Theory: An Advanced Approach
Synopsis
Preliminaries.- Groups and Subgroups.- Cosets, Index and Normal Subgroups.- Homomorphisms.- Chain Conditions and Subnormality.- Direct and Semidirect Products.- Permutation Groups.- Group Actions.- The Structure of -Groups.- Sylow Theory.- The Classification Problem for Groups.- Finiteness Conditions.- Free Groups and Presentations.- Abelian Groups.- References
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From the Back Cover
Fundamentals of Group Theory provides an advanced look at the basic theory of groups. Standard topics in the field are covered alongside a great deal of unique content. There is an emphasis on universality when discussing the isomorphism theorems, quotient groups and free groups as well as a focus on the role of applying certain operations, such as intersection, lifting and quotient to a “group extension”. Certain concepts, such as subnormality, group actions and chain conditions are introduced perhaps a bit earlier than in other texts at this level, in the hopes that the reader would acclimate to these concepts earlier.
Some additional features of the work include:
- An historical look at how Galois viewed groups.
- The problem of whether the commutator subgroup of a group is the same as the set of commutators of the group, including an example of when this is not the case.
- The subnormal join property, that is, the property that the join of two subnormal subgroups is subnormal.
- Cancellation in direct sums.
- A complete proof of the theorem of Baer characterizing nonabelian groups with the property that all of their subgroups are normal.
- A somewhat more in depth discussion of the structure of p-groups, including the nature of conjugates in a p-group, a proof that a p-group with a unique subgroup of any order must be either cyclic (for p>2) or else cyclic or generalized quaternion (for p=2) and the nature of gro
This book is suitable for a graduate course in group theory, part of a graduate course in abstract algebra or for independent study. It can also be read by advanced undergraduates. The book assumes no specific background in group theory, but does assume some level of mathematical sophistication on the part of the reader.
Review
“This is an introductory textbook on group theory which covers its fundamentals in great detail. ... What distinguishes the treatment of group theory from that usually given in algebra textbooks is the very detailed presentation. ... This charming volume has much to recommend itself.” (Monatshefte für Mathematik, 2015)
“This is a text aimed at graduate students. Its 350 pages or so cover more than enough to teach a year-long course on ‘general group theory’ (meaning here both finite and infinite groups). Most standard topics are covered ... in a fresh manner, by insisting on lesser known aspects and by providing newer, more elegant proofs. An adequate collection of proposed exercises comes at the end of each chapter ... .” (Marian Deaconescu, Zentralblatt MATH, Vol. 1244, 2012)
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