Timeline for Is there the Whitehead theorem for cohomology theory?
Current License: CC BY-SA 2.5
3 events
| when toggle format | what | by | license | comment | |
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| Mar 12, 2011 at 19:18 | comment | added | Jino | Neil : How prove that $\tilde{H}^\ast (Z:\mathbb{Z})=0$? | |
| Mar 8, 2011 at 11:18 | comment | added | Johannes Ebert | Your argument proves two other versions that I see frequently in action: 1. If f induces a cohomology isomorphism with coefficients in all fields, then f is a homology isomorphism. 2. If f induces a cohomology isomorphism for all fields of positive characteristic and if the integral homologies of X and Y are finitely generated in each degree, then f is a homology isomorphism. | |
| Mar 8, 2011 at 7:55 | history | answered | Neil Strickland | CC BY-SA 2.5 |