Hypoellipticity of a second-order differential operator

zbMath0612.35027MaRDI QIDQ1088054

Elena I. Ganzha

Publication date: 1985

Published in: Moscow University Mathematics Bulletin (Search for Journal in Brave)

zbMATH Keywords

degenerate elliptic operatorhypoellipticity

Mathematics Subject Classification ID

Boundary value problems for second-order elliptic equations (35J25) Boundary values of solutions to elliptic equations and elliptic systems (35J67) Hypoelliptic equations (35H10)

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