On a boundary principle of extremum for a class of elliptic systems and its application

zbMath0726.35022MaRDI QIDQ803783

K. B. Sabitov

Publication date: 1990

Published in: Moscow University Computational Mathematics and Cybernetics (Search for Journal in Brave)

zbMATH Keywords

uniquenessNeumann problemcone conditionNadirashvili boundary principlepositive directional derivative on the boundary

Mathematics Subject Classification ID

Maximum principles in context of PDEs (35B50) Boundary values of solutions to elliptic equations and elliptic systems (35J67)

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