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Ilya Nikokoshev
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Topologically contractible algebraic varieties

From a post to The Jouanolou trick:

Are there examples of a topologically trivial (contractible) complex algebraic varieties other then affine lines? If yes, are all of them necessarily affine?

This looks like some kind of comparison between Zariski cohomology and complex cohomology.

Ilya Nikokoshev
  • 15.1k
  • 12
  • 77
  • 129