The theory of equations of mixed type with two degeneration lines (Q1589134)
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scientific article; zbMATH DE number 1541549
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | The theory of equations of mixed type with two degeneration lines |
scientific article; zbMATH DE number 1541549 |
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The theory of equations of mixed type with two degeneration lines (English)
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7 March 2001
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In this paper the extremum principles for general linear mixed type equations with two lines of degeneration in the domain of ellipticity, hyperbolicity, and in the whole in the mixed domain are established. The applications of these principles in the investigation of the Tricomi problems for mixed type equations are given.
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extremum principle
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Tricomi problem
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