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Results tagged with at.algebraic-topology
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user 1966
Homotopy theory, homological algebra, algebraic treatments of manifolds.
5
votes
Visualizing how Cech cohomology detects holes
This is explained in "Principles of Algebraic Geometry," by Griffiths & Harris, p42.
Given a simplicial decomposition of your space, associate each vertex $v_\alpha$ with its star $U_\alpha$, where th …
- 4,713
6
votes
What (if anything) happened to Intersection Homology?
There do seem to be people thinking about it. I heard Sylvain Cappell lecture a few weeks ago; he spoke about using intersection (co)homology as part of a generalization of characteristic classes to s …
- 4,713