Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generalisations of the Tits representation   We construct a group K_n with properties similar to infinite Coxeter groups.
In particular, it has a geometric representation featuring hyperplanes and
simplicial chambers. The generators of K_n are given by 2-element subsets of
{0, .., n}. We give some easy combinatorial results on the finite residues of
K_n.

9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int