Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the irreductibility of some Igusa varieties   We describe the connected components of Igusa's varieties of second species
defined par Harris and Taylor in their book. There are in bijection with the
characters of the inversible group of the maximal order of the division algebra
attached to them.

25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio