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May 26, 2011 at 8:36 vote accept Xandi Tuni
May 25, 2011 at 21:19 answer added Tom Goodwillie timeline score: 4
May 25, 2011 at 15:42 answer added Neil Strickland timeline score: 5
May 25, 2011 at 13:56 comment added Tom Goodwillie I don't believe that even the product of two or more circles is rigid in this sense.
May 25, 2011 at 13:25 comment added Tom Goodwillie Every space maps canonically (in the homotopy category) into some topological abelian group whose homology groups are the homotopy groups of the space. (Simplicial free abelian group generated by a simplicial set.) If this map is a homomorphism up to homotopy I wonder what restrictions that places on the homotopy type.
May 25, 2011 at 13:00 history asked Xandi Tuni CC BY-SA 3.0