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zbMath0414.35014MaRDI QIDQ3049224

B. N. Khimchenko, L. I. Kamynin

Publication date: 1979

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

isotropic ellipticity lines linear partial differential operators of second order with non-negative characteristic form strong extremum principles strong maximum-minimum principle

Mathematics Subject Classification ID

Maximum principles in context of PDEs (35B50) Degenerate elliptic equations (35J70) Second-order elliptic equations (35J15)

Related Items (1)

Investigations on an anisotropic strict extremum principle for elliptic- parabolic equations of second order

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