Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Virtual Poincar\'e polynomial of the link of a real algebraic variety   The Euler characteristic of the link of a real algebraic variety is an
interesting topological invariant in order to discuss local topological
properties. We prove in the paper that an invariant stronger than the Euler
Characteristic is well defined for the link of an algebraic variety: its
virtual Poincar\'e polynomial.

24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int