vu viet
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Registered User
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Feb 19 |
comment |
When are diffeomorphisms from a manifold to itself homotopic to the identity? could you cite here clearly the reference for the fact ''For surfaces it is true that a diffeomorphism which is homotopic to id is an isotopy (see Gabai and many others);'. thank. |
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Dec 25 |
asked | Poincare line bundle |
