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Results tagged with reference-request
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user 65956
This tag is used if a reference is needed in a paper or textbook on a specific result.
2
votes
1
answer
260
views
Approximate selection for finite-valued upper hemicontinuous/semicontinuous maps?
I'd like to know if there are any known-results on the existence of continuous approximation theorems for upper hemicontinuous (aka upper semicontinuous) maps $\phi: X\rightarrow Y$ which are finite v …
- 63.9k
6
votes
1
answer
302
views
Reference for Mod 2 cohomology of $BZ_{2r}$ in terms of Stiefel-Whitney Classes
I was hoping for an explicit reference to the description of the mod 2 cohomology of a cyclic group $C_{2r}=\langle t \rangle$ of even order in terms of Stiefel-Whitney classes, i.e., that
$H^*(BZ_{2 …
- 2,287