Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Hirzebruch $\chi_y$-genus and Poincare polynomial revisited   The Hirzebruch $\chi_y$-genus and Poincare polynomial share some similar
features. In this article we investigate two of their similar features
simultaneously. Through this process we shall derive several new results as
well as reprove and improve some known results.

24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin