Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Intersection homology and Poincar\'e duality on homotopically stratified
  spaces   We show that intersection homology extends Poincare duality to manifold
homotopically stratified spaces (satisfying mild restrictions). This includes
showing that, on such spaces, the sheaf of singular intersection chains is
quasi-isomorphic to the Deligne sheaf.

17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs