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zbMath0544.35009MaRDI QIDQ3333414

Alexander Kuz'min

Publication date: 1982

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

zbMATH Keywords

branch point contact singular point discriminant curve normal domain return point qualitative diagram saddle-knot second order equation of mixed type

Mathematics Subject Classification ID

Geometric theory, characteristics, transformations in context of PDEs (35A30) Partial differential equations of mixed type and mixed-type systems of partial differential equations (35M99)

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