Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comparing the automorphism group of the measure algebra with some groups
  related to the infinite permutation group of the natural numbers   We prove, by a straight construction, that the automorphism group of the
measure algebra and the subgroup of the measure preserving ones cannot be
isomorphic to the trivial automorphisms of P(N)/fin.

25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an