Localization and Schr\"odinger perturbations of kernels
  We study iterations of integral kernels satisfying a transience-type condition and we prove exponential estimates analogous to Gronwall\rq{}s inequality. As a consequence we obtain estimates of Schr\"odinger perturbations of integral kernels, including Markovian semigroups. 
Krzysztof Bogdan, Wolfhard Hansen, Tomasz Jakubowski
math.FA math.PR