Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Characterisation of G_2(K)   This paper gives a characterisation of the group G_2(K) over an algebraically
closed field K of characteristic not 2 inside the class of simple K*-groups of
finite Morley rank not interpreting a bad field using the structure of
centralizers of involutions. This implies a general characterisation of tame
K*-groups od odd type whose centralizers have a certain natural structure.

34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org