Wolfhard Hansen

activity

20102023

most citedHarnack inequalities for Hunt processes with Green function

1 citations · 1 across the 6 of their papers we have counts for

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math.AP2014★ 1 cited

Harnack inequalities for Hunt processes with Green function

Wolfhard Hansen, Ivan Netuka

Let $(X, W)$ be a balayage space, $1 \in W$ , or - equivalently - let $W$ be the set of excessive functions of a Hunt process on a locally compact space $X$ …

math.AP2014

Liouville property, Wiener's test and unavoidable sets for Hunt processes

Wolfhard Hansen

Let $(X, W)$ be a balayage space, $1 \in W$ , or - equivalently - let $W$ be the set of excessive functions of a Hunt process on a locally compact space $X$ …

math.AP2014

Unavoidable collections of balls for processes with isotropic unimodal Green function

Wolfhard Hansen

Let us suppose that we have a right continuous Markov semigroup on $R^{d}$ , $d \geq 1$ , such that its potential kernel is given by convolution with a function $G_{0} = g (∣ \cdot ∣)$ , where $…

math.AP2012

Champagne subregions with unavoidable bubbles

Wolfhard Hansen, Ivan Netuka

A champagne subregion of a connected open set $U \neq = \emptyset$ in $R^{d}$ , $d \geq 2$ , is obtained omitting pairwise disjoint closed balls $B ˉ (x, r_{x})$ , $x \in X$ , the bubbles, where…

math.AP2010

Jensen measures in potential theory

Wolfhard Hansen, Ivan Netuka

It is shown that, for open sets in classical potential theory and - more generally - for elliptic harmonic spaces, the set of Jensen measures for a point is a simple union of close…