A converse to Gårding's inequality for a class of formally hypoelliptic differential operators (Q1079732)
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scientific article; zbMATH DE number 3964474
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A converse to Gårding's inequality for a class of formally hypoelliptic differential operators |
scientific article; zbMATH DE number 3964474 |
Statements
A converse to Gårding's inequality for a class of formally hypoelliptic differential operators (English)
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1987
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We prove that a class of formally hypoelliptic differential operators are characterized by the validity of a generalized Gårding inequality. The operators are not assumed to have coefficients of class \(C^{\infty}\).
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formally hypoelliptic differential operators
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generalized Gårding inequality
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