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Publication:3049225
zbMath0414.35015MaRDI QIDQ3049225
L. I. Kamynin, B. N. Khimchenko
Publication date: 1978
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
maximum principleelliptic equationsdirectional derivativetheorems of Giraud typesecond order operators with nonnegative characteristic form
Maximum principles in context of PDEs (35B50) Degenerate elliptic equations (35J70) Groups and semigroups of linear operators (47D03) Second-order elliptic equations (35J15)
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