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Groups of prime power order. Volume 4. (English) Zbl 1344.20001

De Gruyter Expositions in Mathematics 61. Berlin: De Gruyter (ISBN 978-3-11-028145-3/hbk; 978-3-11-028147-7/ebook). xvi, 458 p. (2016).
A few years ago the reviewer was pleasantly surprized with the announcement that after the successfull three volumes regarding explicit structure of \(p\)-groups by Y. G. Berkovich [Groups of prime power order. Vol. 1. de Gruyter Expositions in Mathematics 46. Berlin: Walter de Gruyter (2008; Zbl 1168.20001)] and Y. G. Berkovich and Z. Janko [Groups of prime power order. Vol. 2. de Gruyter Expositions in Mathematics 47. Berlin: Walter de Gruyter (2008; Zbl 1168.20002); Groups of prime power order. Vol. 3. de Gruyter Expositions in Mathematics 56. Berlin: Walter de Gruyter (2011; Zbl 1229.20001)], another two volumes were in progress to appear. Seeing over all five volumes now, one is able to conclude that the authors have enriched the mathematical literature with an important topic.
The two books here under review do contain a wealth of new results. To give a “numerical” impression firstly: In volume 4 that are at least 24 new characaterizations of certain classes of \(p\)-groups together with 46 sections filled with new structure theorems; 13 so-called Appendices, hundreds of exercises and 508 (unsolved mostly) problems and research themes.
In volume 5 these figures are respectively (in short) 34; 66; 52; hundreds; 572. All these things constitute a remarkable treasure cove for researchers and other curious mathematiciens in the years to come.
Here are some snapshorts to be found in volume 4: (partly quoted from backover)
\(\bullet\) subgroup structure of metacyclic \(p\)-groups;
\(\bullet\) Ichikawa’s theorem of \(p\)-groups with two sizes of conjugate classes;
\(\bullet\) \(p\)-central \(p\)-groups;
\(\bullet\) theorem of Kegel on nilpotence of \(H_p\)-groups;
\(\bullet\) partitions of \(p\)-groups;
\(\bullet\) characterizations of Dedekindian groups;
\(\bullet\) norm of \(p\)-groups;
\(\bullet\) \(p\)-groups with 2-uniserial subgroups of small order;
\(\bullet\) structure of modular \(p\)-groups.

MSC:

20-02 Research exposition (monographs, survey articles) pertaining to group theory
20D15 Finite nilpotent groups, \(p\)-groups
20D25 Special subgroups (Frattini, Fitting, etc.)
20D35 Subnormal subgroups of abstract finite groups
20D45 Automorphisms of abstract finite groups
00A07 Problem books
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