Hypoellipticity of Some Degenerate Parabolic Operators
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関連論文
- On a parametrix in some weak sense of a first order linear partial differential operator with two independent variables
- On Necessary Condition (P) of F. Treves for Hypoellipticity of Linear Partial Differential Operator of Principal Type
- Hypoellipticity of Some Degenerate Parabolic Operators
- Remarks on ranks of Lie algebras associated with a second order partial differential operator and necessary conditions for hypoellipticity
- Remarks on the Rank of a Lie Algebra and Necessary Conditions for Hypoellipticity of a Degenerate Parabolic Operator
- Hypoellipticity of a second order operator with a principal symbol changing sign across a smooth hypersurface