New sharp bounds for the Jacobi heat kernel via an extension of the Dijksma-Koornwinder formula
Artikel i vetenskaplig tidskrift, 2026
We obtain sharp estimates for the Jacobi heat kernel in a range of parameters where the result has not been established before. This extends and completes an earlier result due to the authors. The proof is based on a generalization of the Dijksma–Koornwinder product formula for Jacobi polynomials.
Författare
Adam Nowak
Polish Academy of Sciences
Peter Sjögren
Chalmers, Matematiska vetenskaper
Göteborgs universitet
Tomasz Szarek
University of Georgia
Uniwersytet Wrocławski
Constructive Approximation
0176-4276 (ISSN) 1432-0940 (eISSN)
Vol. 63 623-645Ämneskategorier (SSIF 2025)
Diskret matematik
Matematik
DOI
10.1007/s00365-026-09734-x