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Popivanov, Pet”r R.

Some classes of differential operators with multiple characteristics, which have no solutions. (Russian) Zbl 0497.35018

PLISKA, Stud. Math. Bulg. 1981, No. 3, 47-60 (1981).
Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page
scan of Zbl 0497.35018

Cited in 2 Documents

MSC:

35E20 General theory of PDEs and systems of PDEs with constant coefficients
35A30 Geometric theory, characteristics, transformations in context of PDEs
35A07 Local existence and uniqueness theorems (PDE) (MSC2000)

Keywords:

local nonsolvability; multiple characteristics; symbol; quasihomogeneous; hypoelliptic
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