Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with intersection-cohomology
Search options answers only
not deleted
user 1310
2
votes
Example to show that the inverse image under a finite morphism is not t-exact with respect t...
My idea was to consider $f \colon X \to Y$ of dimension $d$ such that $a_Y^\ast \mathbf Q[d] \cong IC_Y$ but $a_X^\ast \mathbf Q[d] \not\cong IC_X$, where $a$ denotes the map to a point and all functo …
- 40.2k
2
votes
on a characterisation of the intersection complex
This should fail already in the simplest case when $X = \mathbb A^1$ and $U$ is the complement of a point. Namely, the trivial local system on $U$ and the point admits several different gluings to a p …
- 40.2k
4
votes
Hodge theoretic properties of intersection cohomology
As dhy suggested in a comment, this is indeed true and it is part of what Saito proved in his formalism of mixed Hodge modules. A mixed Hodge module is essentially a perverse sheaf carrying something …
- 40.2k