A necessary condition for hypoellipticity of degenerate elliptic- parabolic operators (Q1137722)
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scientific article; zbMATH DE number 3669131
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A necessary condition for hypoellipticity of degenerate elliptic- parabolic operators |
scientific article; zbMATH DE number 3669131 |
Statements
A necessary condition for hypoellipticity of degenerate elliptic- parabolic operators (English)
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1979
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degenerate elliptic-parabolic operators
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hypoellipticity
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controllability
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differential operator
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