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seen Feb 5 '13 at 5:42

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answered Differential of a Sobolev map between manifolds
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comment Are there non-trivial locally trivial fiber bundles of Hilbert manifolds if the fiber is infinite-dimensional?
Dear Alberto, your comments answers my question. Thanks!
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asked Are there non-trivial locally trivial fiber bundles of Hilbert manifolds if the fiber is infinite-dimensional?
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asked Is any Morse trajectory contained in a contractible open set?
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comment Down-To-Earth Uses of de Rham Cohomology to Convince a Wide Audience of its Usefulness
Actually this was well-known a long time before the advent of deRham cohomology...
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comment Linearization of a vector field
google flow box theorem