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Normal 2-coverings of the finite simple groups and their generalizations

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Normal 2-coverings of the finite simple groups and their generalizationsby Daniela Bubboloni, Pablo Spiga, Thomas Stefan Weigel.
作者:	Bubboloni, Daniela.
其他作者:	Spiga, Pablo.
出版者:	Cham :Springer Nature Switzerland :2024.
面頁冊數:	x, 180 p. :ill., digital ;24 cm.
Contained By:	Springer Nature eBook
標題:	Finite simple groups.
電子資源:	https://doi.org/10.1007/978-3-031-62348-6
ISBN:	9783031623486$q(electronic bk.)

Normal 2-coverings of the finite simple groups and their generalizations
Bubboloni, Daniela.

Normal 2-coverings of the finite simple groups and their generalizations[electronic resource] /by Daniela Bubboloni, Pablo Spiga, Thomas Stefan Weigel. - Cham :Springer Nature Switzerland :2024. - x, 180 p. :ill., digital ;24 cm. - Lecture notes in mathematics,v. 23521617-9692 ;. - Lecture notes in mathematics ;2035..

- Introduction -- Preliminaries -- Linear groups -- Unitary groups -- Symplectic groups -- Odd dimensional orthogonal groups -- Orthogonal groups with Witt defect 1 -- Orthogonal groups with Witt defect 0 -- Proofs of the main theorems -- Almost simple groups having socle a sporadic simple group -- Dropping the maximality -- Degenerate normal 2-coverings.

This book provides a complete and comprehensive classification of normal 2-coverings of non-abelian simple groups and their generalizations. While offering readers a thorough understanding of these structures, and of the groups admitting them, it delves into the properties of weak normal coverings. The focal point is the weak normal covering number of a group G, the minimum number of proper subgroups required for every element of G to have a conjugate within one of these subgroups, via an element of Aut(G) This number is shown to be at least 2 for every non-abelian simple group and the non-abelian simple groups for which this minimum value is attained are classified. The discussion then moves to almost simple groups, with some insights into their weak normal covering numbers. Applications span algebraic number theory, combinatorics, Galois theory, and beyond. Compiling existing material and synthesizing it into a cohesive framework, the book gives a complete overview of this fundamental aspect of finite group theory. It will serve as a valuable resource for researchers and graduate students working on non-abelian simple groups.

ISBN: 9783031623486$q(electronic bk.)

Standard No.: 10.1007/978-3-031-62348-6doiSubjects--Topical Terms:

189565
Finite simple groups.

LC Class. No.: QA177

Dewey Class. No.: 512.23

Normal 2-coverings of the finite simple groups and their generalizations
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520 $a This book provides a complete and comprehensive classification of normal 2-coverings of non-abelian simple groups and their generalizations. While offering readers a thorough understanding of these structures, and of the groups admitting them, it delves into the properties of weak normal coverings. The focal point is the weak normal covering number of a group G, the minimum number of proper subgroups required for every element of G to have a conjugate within one of these subgroups, via an element of Aut(G) This number is shown to be at least 2 for every non-abelian simple group and the non-abelian simple groups for which this minimum value is attained are classified. The discussion then moves to almost simple groups, with some insights into their weak normal covering numbers. Applications span algebraic number theory, combinatorics, Galois theory, and beyond. Compiling existing material and synthesizing it into a cohesive framework, the book gives a complete overview of this fundamental aspect of finite group theory. It will serve as a valuable resource for researchers and graduate students working on non-abelian simple groups.
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