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# Questions

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### What group is <a,b | a^2=b^2>?

dec 14 10 at 12:58 Sam Nead 5,6371227

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### References for Eilenberg-Zilber shuffle product

oct 17 at 10:21 Jake 8113

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### How does the Lefschetz-Poincare dual torsion linking pairing on manifolds with boundary interact with the maps of the long exact sequence of the manifold-boundary pair?

aug 13 10 at 0:42 Greg Friedman 2,074514

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### Ranicki symmetric L-groups of finite fields?

dec 5 10 at 12:06 Andrew Ranicki 1,741198

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### What characteristic class information comes from the 2-torsion of $H^*(BSO(n);Z)$?

mar 1 11 at 0:12 Allen Hatcher 7,31422636

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### Are there oriented $4k+2$ manifolds such that $im(H_{2k+1}(M; Z/2)\to H_{2k+1}(M, \partial M; Z/2))$ has odd dimension?

jan 29 11 at 4:38 Tom Goodwillie 27k262111

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### What is a principal refinement of a Postnikov system?

jul 29 10 at 20:50 Tom Goodwillie 27k262111

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### Conventions for definitions of the cap product

aug 26 10 at 4:29 Tom Goodwillie 27k262111

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### Alternative approaches to the universal coefficient theorem

aug 30 11 at 19:51 Greg Friedman 2,074514

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