Nonpositive curvature on the area-preserving diffeomorphism group (Q556144)
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scientific article; zbMATH DE number 2175216
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Nonpositive curvature on the area-preserving diffeomorphism group |
scientific article; zbMATH DE number 2175216 |
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Nonpositive curvature on the area-preserving diffeomorphism group (English)
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13 June 2005
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The author gives a necessary and sufficient condition for a steady flow with analytic stream function and isolated zeroes to have nonpositive curvature operator. Elementary consequences of this result are then discussed in detail.
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curvature
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volume preserving
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diffeomorphism group
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Lagrangian
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stability
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fluid
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0.92425376
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0.92178595
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0.9142659
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0.9013268
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0.89885837
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0.8982349
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0.8955054
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0.8938633
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