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edited title; added 91 characters in body

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edited Aug 27, 2011 at 3:55

Why "Classificatoin""Classification" of 4 manifolds is NOT possible?

I know classification of 2 manifolds and geometrization for 3 manifolds. Why for dimension great or equal to 4, this task become impossible?

edit: Or should I ask "why geometrization won't be possible for 4 or higher dimension?"

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asked Aug 27, 2011 at 3:18

I know classification of 2 manifolds and geometrization for 3 manifolds. Why for dimension great or equal to 4, this task become impossible?