On the tangential touch between the free and the fixed boundaries for the two-phase obstacle-like problem

Preprint, Other literature type English OPEN
Andersson, John; Matevosyan, Norayr; Mikayelyan, Hayk;
(2004)

In this paper we consider the following two-phase obstacle-problem-like equation in the unit half-ball $\Delta u = \lambda_{+\chi_{\{ u>0 \}}} - \lambda_{-\chi_{\{ u<0 \}}},\quad\lambda_{\pm}>0. $ We prove that the free boundary touches the fixed boundary (uniformly) ta... View more
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    12 references, page 1 of 2

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