On harmonic functions of symmetric Levy processes

Details On harmonic functions of symmetric Levy processes On harmonic functions of symmetric Levy processes

2011-09-16

arxiv.org/abs/1109.3676v2

Mathematics

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We consider some classes of Levy processes for which the estimate of Krylov and Safonov (as in [BL02]) fails and thus it is not possible to use the standard iteration technique to obtain a-priori Holder continuity estimates of harmonic functions. Despite the faliure of this method, we obtain some a-priori regularity estimates of harmonic functions for these processes. Moreover, we extend results from [SSV06] and obtain asymptotic behavior of the Green function and the Levy density for a large class of subordinate Brownian motions, where the Laplace exponent of the corresponding subordinator is a slowly varying function.

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