1.

Record Nr.

UNISALENTO991003556219707536

Autore

Kobayashi, Toshiyuki

Titolo

Conformal Symmetry Breaking Operators for Differential Forms on Spheres [e-book] / by Toshiyuki Kobayashi, Toshihisa Kubo, Michael Pevzner

Pubbl/distr/stampa

Singapore : Springer, 2016

ISBN

9789811026560

Descrizione fisica

1 online resource (ix, 192 p.)

Collana

Lecture Notes in Mathematics, 0075-8434 ; 2170

Classificazione

AMS 22E46

AMS 22E45

AMS 53A30

AMS 58J70

LC QA641-670

Altri autori (Persone)

Kubo, Toshihisaauthor

Pevzner, Michael

Disciplina

516.36

Soggetti

Topological groups

Lie groups

Fourier analysis

Partial differential equations

Differential geometry

Mathematical physics

Lingua di pubblicazione

Inglese

Formato

Software

Livello bibliografico

Monografia

Sommario/riassunto

This work is the first systematic study of all possible conformally covariant differential operators transforming differential forms on a Riemannian manifold X into those on a submanifold Y with focus on the model space (X, Y) = (Sn, Sn-1). The authors give a complete classification of all such conformally covariant differential operators, and find their explicit formulæ in the flat coordinates in terms of basic operators in differential geometry and classical hypergeometric polynomials. Resulting families of operators are natural generalizations of the Rankin–Cohen brackets for modular forms and Juhl's operators from conformal holography. The matrix-valued factorization identities



among all possible combinations of conformally covariant differential operators are also established. The main machinery of the proof relies on the "F-method" recently introduced and developed by the authors. It is a general method to construct intertwining operators between C∞-induced representations or to find singular vectors of Verma modules in the context of branching rules, as solutions to differential equations on the Fourier transform side. The book gives a new extension of the F-method to the matrix-valued case in the general setting, which could be applied to other problems as well. This book offers a self-contained introduction to the analysis of symmetry breaking operators for infinite-dimensional representations of reductive Lie groups. This feature will be helpful for active scientists and accessible to graduate students and young researchers in differential geometry, representation theory, and theoretical physics