Skip to main content

All Questions

Filter by
Sorted by
Tagged with
33 votes
4 answers
6k views

What (if anything) happened to Intersection Homology?

In the early 1990's, Gil Kalai introduced me to a very interesting generalization of homology theory called intersection homology, which existed for like 10 years back then I believe. Defined ...
Alon Amit's user avatar
  • 6,734
23 votes
4 answers
5k views

De Rham decomposition theorem, generalisations and good references

De Rham decomposition theorem states that every simply-connected Riemannian manifold $M$ that admits complementary sub-bundles $T'(M)$ and $T''(M)$ of its tangent bundle parallel with respect to the ...
Dmitri Panov's user avatar
  • 28.9k
11 votes
1 answer
335 views

Reference request: sheaves on the site of d-manifolds

I believe I know how to prove the following results. I also know to whom to cite fancy-shmancy results that have these as a very special case. My question is: what are the correct citations for ...
Theo Johnson-Freyd's user avatar