Weighted Bergman kernels for nearly holomorphic functions on bounded symmetric domains
Journal article, 2024

We identify the standard weighted Bergman kernels of spaces of nearly holomorphic functions, in the sense of Shimura, on bounded symmetric domains. This also yields a description of the analogous kernels for spaces of “invariantly-polyanalytic” functions — a generalization of the ordinary polyanalytic functions on the ball which seems to be the most appropriate one from the point of view of holomorphic invariance. In both cases, the kernels turn out to be given by certain spherical functions, or equivalently Heckman-Opdam hypergeometric functions, and a conjecture relating some of these to a Faraut-Koranyi hypergeometric function is formulated based on the study of low rank situations. Finally, analogous results are established also for compact Hermitian symmetric spaces, where explicit formulas in terms of multivariable Jacobi polynomials are given.

Polyanalytic functions

Bergman kernel

Bounded symmetric domain

Nearly holomorphic functions


M. Englis

Slezska univerzita v Opave

Mathematics Institute

El Hassan Youssfi

Institut de Mathematiques de Marseille

Genkai Zhang

Chalmers, Mathematical Sciences, Analysis and Probability Theory

Journal of Functional Analysis

0022-1236 (ISSN) 1096-0783 (eISSN)

Vol. 286 2 110213

Representations of Lie groups. Harmonic and complex analysis on symmetric and locally symmetric spaces

Swedish Research Council (VR) (2022-02861), 2023-01-01 -- 2026-12-31.

Swedish Research Council (VR), 2019-01-01 -- 2022-12-31.

Subject Categories

Mathematical Analysis



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