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Title of Journal: Potential Anal

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Abbravation: Potential Analysis

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Springer Netherlands

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10.1007/978-3-540-32219-1_37

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1572-929X

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Intertwining Relations for OneDimensional Diffusi

Authors: Michel Bonnefont Aldéric Joulin
Publish Date: 2014/04/28
Volume: 41, Issue: 4, Pages: 1005-1031
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Abstract

Following the recent work Chafaï and Joulin Bernoulli 191855–1879 2013 fulfilled in the discrete case we provide in this paper new intertwining relations for semigroups of onedimensional diffusions Various applications of these results are investigated among them the famous variational formula of the spectral gap derived by Chen and Wang Trans Am Math Soc 3491239–1267 1997 together with a new criterion ensuring that the logarithmic Sobolev inequality holds We complete this work by revisiting some classical examples for which new estimates on the optimal constants are derived


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