Top network posts

• 19 Is a finite dimensional CW complex with the same homotopy groups as $S^n$ homotopy equivalent to $S^n$
• 12 Every group the homology of some space?
• 10 Closed orientable 4-manifolds with $H_2(M)\cong \mathbb{Z}$ do not admit free actions of $\mathbb{Z}/2$
• 9 An equivalence relation on the isomorphism classes of finite groups
• 9 Show that the free group on three generators is a subgroup of the free group on two generators
• 9 Examples of non-compact 3-dim submanifolds with non-trivial normal bundle
• 9 What manifolds $M$ have a $CW-$structure so that the $n-$skeleton, $M_n$, is a manifold for all $n$ aswell?
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