Kuz’min, A. G. On the behaviour of the characteristics of equations of mixed type near the line of degeneration. (Russian) Zbl 0486.35005 Differ. Uravn. 17, 2052-2063 (1981). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 6 Documents MSC: 35A30 Geometric theory, characteristics, transformations in context of PDEs 35M99 Partial differential equations of mixed type and mixed-type systems of partial differential equations Keywords:qualitative diagram; contact; singular point; branch point; saddle-knot; normal domain; second order equation of mixed type; discriminant curve; return point Citations:Zbl 0454.34024; Zbl 0467.34031 PDFBibTeX XMLCite \textit{A. G. Kuz'min}, Differ. Uravn. 17, 2052--2063 (1981; Zbl 0486.35005)