Admissible and sectorial convergence of generalized Poisson integrals on harmonic NA groups

Article Type

Research Article

Publication Title

Proceedings of the Indian Academy of Sciences Mathematical Sciences

Abstract

We prove a converse of Fatou type result for certain eigenfunctions of the Laplace–Beltrami operator on harmonic NA groups relating sectorial convergence and admissible convergence of Poisson type integrals of complex (signed) measures. This result improves and extends several results of this kind proved earlier in the context of the classical upper half space R+n+1. Similar results are also obtained in the degenerate case of the real hyperbolic spaces.

DOI

10.1007/s12044-025-00836-3

Publication Date

12-1-2025

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