Top network posts

• 17 Is a finite dimensional CW complex with the same homotopy groups as $S^n$ homotopy equivalent to $S^n$
• 11 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 $\mathbb{Z}/2$
• 10 What is the intuition for higher homotopy groups not vanishing?
• 8 homology with integral coefficients vs homology with field coefficients
• 8 Two questions on Massey's Algebraic Topology, Chapter 2.8
• 8 An equivalence relation on the isomorphism classes of finite groups
• View more network posts →