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JOURNALS // Matematicheskii Sbornik // Archive

Mat. Sb., 2008 Volume 199, Number 6, Pages 137–160 (Mi sm3942)

This article is cited in 1 paper

Removable singularities for solutions of second-order linear uniformly elliptic equations in non-divergence form

A. V. Pokrovskii

Institute of Mathematics, Ukrainian National Academy of Sciences

Abstract: Let $\mathfrak L$ be a linear uniformly elliptic operator of the second order in $\mathbb R^n$, $n\geqslant2$, with bounded measurable real coefficients, that satisfies the weak uniqueness property. The removability of compact subsets of a domain $D\subset\mathbb R^n$ is studied for weak solutions of the equation $\mathfrak Lf=0$ (in the sense of Krylov and Safonov) in some classes of continuous functions in $D$. In particular, a metric criterion for removability in Hölder classes with small exponent of smoothness is obtained.
Bibliography: 20 titles.

UDC: 517.956

MSC: 3560, 35J15

Received: 10.09.2007

DOI: 10.4213/sm3942


 English version:
Sbornik: Mathematics, 2008, 199:6, 923–944

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