Karol Szczypkowski

activity

20112026

most citedKato classes for Lévy processes

8 citations · 22 across the 13 of their papers we have counts for

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Showing 2017Show all

2 papers · 1 filter

math.PR2017

Estimates of heat kernels of non-symmetric Lévy processes

Tomasz Grzywny, Karol Szczypkowski

We investigate densities of vaguely continuous convolution semigroups of probability measures on $R^{d}$ . First, we provide results that give upper estimates in a situation…

math.FA2017

Sharp Gaussian estimates for heat kernels of Schrödinger operators

Krzysztof Bogdan, Jacek Dziubański, Karol Szczypkowski

We characterize functions $V \leq 0$ for which the heat kernel of the Schrö\-dinger operator $Δ + V$ is comparable with the Gauss-Weierstrass kernel uniformly in space and time. In dim…