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Galois theories of fields and rings

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Galois theories of fields and rings/ by Francis Borceux.
作者:	Borceux, Francis.
出版者:	Cham :Springer Nature Switzerland : : 2024.,
面頁冊數:	xii, 181 p. :ill., digital ;24 cm.
內容註:	Historical introduction -- Part I Some Galois theorems for fields -- 1 The classical Galois theorem -- 2 The Galois theorem of Grothendieck -- 3 Profinite topological spaces -- 4 The Galois theorems in arbitrary dimension -- Part II The Galois theory of rings -- 5 Adjunctions and monads -- 6 Profinite groupoids and presheaves -- 7 The descent theory of rings -- 8 The Pierce spectrum of a ring -- 9 The Galois theorem for rings -- Further Reading -- Index.
Contained By:	Springer Nature eBook
標題:	Galois theory. -
電子資源:	https://doi.org/10.1007/978-3-031-58460-2
ISBN:	9783031584602

Galois theories of fields and rings
Borceux, Francis.

Galois theories of fields and rings[electronic resource] /by Francis Borceux. - Cham :Springer Nature Switzerland :2024. - xii, 181 p. :ill., digital ;24 cm. - Coimbra mathematical texts,v. 22813-0065 ;. - Coimbra mathematical texts ;v. 2..

Historical introduction -- Part I Some Galois theorems for fields -- 1 The classical Galois theorem -- 2 The Galois theorem of Grothendieck -- 3 Profinite topological spaces -- 4 The Galois theorems in arbitrary dimension -- Part II The Galois theory of rings -- 5 Adjunctions and monads -- 6 Profinite groupoids and presheaves -- 7 The descent theory of rings -- 8 The Pierce spectrum of a ring -- 9 The Galois theorem for rings -- Further Reading -- Index.

This textbook arises from a master's course taught by the author at the University of Coimbra. It takes the reader from the very classical Galois theorem for fields to its generalization to the case of rings. Given a finite-dimensional Galois extension of fields, the classical bijection between the intermediate field extensions and the subgroups of the corresponding Galois group was extended by Grothendieck as an equivalence between finite-dimensional split algebras and finite sets on which the Galois group acts. Adding further profinite topologies on the Galois group and the sets on which it acts, these two theorems become valid in arbitrary dimension. Taking advantage of the power of category theory, the second part of the book generalizes this most general Galois theorem for fields to the case of commutative rings. This book should be of interest to field theorists and ring theorists wanting to discover new techniques which make it possible to liberate Galois theory from its traditional restricted context of field theory. It should also be of great interest to category theorists who want to apply their everyday techniques to produce deep results in other domains of mathematics.

ISBN: 9783031584602

Standard No.: 10.1007/978-3-031-58460-2doiSubjects--Topical Terms:

523821
Galois theory.

LC Class. No.: QA214

Dewey Class. No.: 512.32

Galois theories of fields and rings
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520 $a This textbook arises from a master's course taught by the author at the University of Coimbra. It takes the reader from the very classical Galois theorem for fields to its generalization to the case of rings. Given a finite-dimensional Galois extension of fields, the classical bijection between the intermediate field extensions and the subgroups of the corresponding Galois group was extended by Grothendieck as an equivalence between finite-dimensional split algebras and finite sets on which the Galois group acts. Adding further profinite topologies on the Galois group and the sets on which it acts, these two theorems become valid in arbitrary dimension. Taking advantage of the power of category theory, the second part of the book generalizes this most general Galois theorem for fields to the case of commutative rings. This book should be of interest to field theorists and ring theorists wanting to discover new techniques which make it possible to liberate Galois theory from its traditional restricted context of field theory. It should also be of great interest to category theorists who want to apply their everyday techniques to produce deep results in other domains of mathematics.
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