Wolfhard Hansen

collaborators

2 papers

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…