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Results tagged with fibre-bundles
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user 2811
for questions about fiber bundles, including structure groups, principal bundles, and spaces of sections.
5
votes
2
answers
393
views
Examples and references for Kan-like extensions?
Left and right Kan extensions are both "push-forwards" that share a certain property. I'd like to hear other, non-Kan, examples of such push-forwards, as well as perhaps a better way to think about th …
- 8,659
6
votes
Accepted
Bundle-to-function correspondence
This answer comes by private correspondence from Mathieu Anel. I record it here, with some minor clean-up, because it's exactly what I was looking for. --David Spivak
Here are some thoughts about …
- 8,659
10
votes
1
answer
502
views
Bundle-to-function correspondence
To a morphism of sets $f\colon E\to B$ with finite fibers, one may assign a function $$|f^{-1}|\colon B\to{\mathbb N}$$ sending an element $b\in B$ to the cardinality of the fiber $f^{-1}(b)$.
To a …
- 8,659