Abstract
The aim of this article is to establish two-sided Gaussian bounds for the heat kernels on the unit ball and simplex in \({{\mathbb {R}}}^n\), and in particular on the interval, generated by classical differential operators whose eigenfunctions are algebraic polynomials. To this end we develop a general method that employs the natural relation of such operators with weighted Laplace operators on suitable subsets of Riemannian manifolds and the existing general results on heat kernels. Our general scheme allows us to consider heat kernels in the weighted cases on the interval, ball, and simplex with parameters in the full range.
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Communicated by Edward B. Saff.
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The first author has been supported by ANR Forewer. The second author has been supported by NSF Grant DMS-1714369. The third author has been supported by NSF Grant DMS-1510296.
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Kerkyacharian, G., Petrushev, P. & Xu, Y. Gaussian Bounds for the Weighted Heat Kernels on the Interval, Ball, and Simplex. Constr Approx 51, 73–122 (2020). https://doi.org/10.1007/s00365-019-09458-1
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DOI: https://doi.org/10.1007/s00365-019-09458-1