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Unitary representations and unitary ...

Einsiedler, Manfred Leopold.

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Unitary representations and unitary duals

Record Type:	Electronic resources : Monograph/item
Title/Author:	Unitary representations and unitary duals/ by Manfred Einsiedler, Thomas Ward.
Author:	Einsiedler, Manfred Leopold.
other author:	Ward, Thomas.
Published:	Cham :Springer Nature Switzerland : : 2025.,
Description:	xvii, 564 p. :ill., digital ;24 cm.
[NT 15003449]:	1 Unitary Representations -- 2 Abelian Groups -- 3 Compact Groups -- 4 Lie Algebras and Unitary Representations of SU2(R) -- 5 Normal Abelian Subgroups and Unitary Duals -- 6 Weak Containment and the Fell Topology -- 7 Smooth Vectors and Decay for SL3(R) -- 8 Discrete Series Representations and Temperedness -- 9 Unitary Representations of SL2(R) -- Appendix A: Linear Algebra -- Appendix B: Analysis -- Appendix C: Topological Groups.
Contained By:	Springer Nature eBook
Subject:	Unitary groups. -
Online resource:	https://doi.org/10.1007/978-3-032-03899-9
ISBN:	9783032038999

Unitary representations and unitary duals
Einsiedler, Manfred Leopold.

Unitary representations and unitary duals[electronic resource] /by Manfred Einsiedler, Thomas Ward. - Cham :Springer Nature Switzerland :2025. - xvii, 564 p. :ill., digital ;24 cm. - Graduate texts in mathematics,3082197-5612 ;. - Graduate texts in mathematics ;308..

1 Unitary Representations -- 2 Abelian Groups -- 3 Compact Groups -- 4 Lie Algebras and Unitary Representations of SU2(R) -- 5 Normal Abelian Subgroups and Unitary Duals -- 6 Weak Containment and the Fell Topology -- 7 Smooth Vectors and Decay for SL3(R) -- 8 Discrete Series Representations and Temperedness -- 9 Unitary Representations of SL2(R) -- Appendix A: Linear Algebra -- Appendix B: Analysis -- Appendix C: Topological Groups.

This graduate textbook introduces the unitary representation theory of groups, emphasizing applications in fields like dynamical systems. It begins with the general theory and motivation, then explores key classes of groups. Abelian and compact groups are treated through Pontryagin duality and the Peter-Weyl theorem. Metabelian groups illustrate links to ergodic theory and lead to the Mackey machine. Weak containment and the Fell topology are introduced through examples. The final chapters apply the theory to special linear groups in dimensions two and three, covering smooth vectors, spectral gaps, and decay of matrix coefficients. The two-dimensional case is examined in depth, including the Kunze-Stein phenomenon, spectral decomposition on the hyperbolic plane, and the Weil representation. The book concludes with a full description of the unitary dual of SL(2,R) and its Fell topology, applying the theory to prove effective equidistribution of horocycle orbits. With its focus on key examples and concrete explanations, this textbook is aimed at graduate students taking first steps in unitary representation theory. It builds the theory from the ground up, requiring only some familiarity with functional analysis beyond standard undergraduate mathematics.

ISBN: 9783032038999

Standard No.: 10.1007/978-3-032-03899-9doiSubjects--Topical Terms:

752493
Unitary groups.

LC Class. No.: QA174.2

Dewey Class. No.: 512.2

Unitary representations and unitary duals
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100 1 $a Einsiedler, Manfred Leopold. $3 3803203
245 1 0 $a Unitary representations and unitary duals $h [electronic resource] / $c by Manfred Einsiedler, Thomas Ward.
260 $a Cham : $b Springer Nature Switzerland : $b Imprint: Springer, $c 2025.
300 $a xvii, 564 p. : $b ill., digital ; $c 24 cm.
490 1 $a Graduate texts in mathematics, $x 2197-5612 ; $v 308
505 0 $a 1 Unitary Representations -- 2 Abelian Groups -- 3 Compact Groups -- 4 Lie Algebras and Unitary Representations of SU2(R) -- 5 Normal Abelian Subgroups and Unitary Duals -- 6 Weak Containment and the Fell Topology -- 7 Smooth Vectors and Decay for SL3(R) -- 8 Discrete Series Representations and Temperedness -- 9 Unitary Representations of SL2(R) -- Appendix A: Linear Algebra -- Appendix B: Analysis -- Appendix C: Topological Groups.
520 $a This graduate textbook introduces the unitary representation theory of groups, emphasizing applications in fields like dynamical systems. It begins with the general theory and motivation, then explores key classes of groups. Abelian and compact groups are treated through Pontryagin duality and the Peter-Weyl theorem. Metabelian groups illustrate links to ergodic theory and lead to the Mackey machine. Weak containment and the Fell topology are introduced through examples. The final chapters apply the theory to special linear groups in dimensions two and three, covering smooth vectors, spectral gaps, and decay of matrix coefficients. The two-dimensional case is examined in depth, including the Kunze-Stein phenomenon, spectral decomposition on the hyperbolic plane, and the Weil representation. The book concludes with a full description of the unitary dual of SL(2,R) and its Fell topology, applying the theory to prove effective equidistribution of horocycle orbits. With its focus on key examples and concrete explanations, this textbook is aimed at graduate students taking first steps in unitary representation theory. It builds the theory from the ground up, requiring only some familiarity with functional analysis beyond standard undergraduate mathematics.
650 0 $a Unitary groups. $3 752493
650 0 $a Abelian groups. $3 641259
650 0 $a Lie algebras. $3 526115
650 1 4 $a Topological Groups and Lie Groups. $3 3593340
650 2 4 $a Abstract Harmonic Analysis. $3 891093
650 2 4 $a Dynamical Systems. $3 3538746
650 2 4 $a Functional Analysis. $3 893943
700 1 $a Ward, Thomas. $3 897452
710 2 $a SpringerLink (Online service) $3 836513
773 0 $t Springer Nature eBook
830 0 $a Graduate texts in mathematics ; $v 308. $3 3803204
856 4 0 $u https://doi.org/10.1007/978-3-032-03899-9
950 $a Mathematics and Statistics (SpringerNature-11649)