Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fixed point sets of parabolic isometries of CAT(0)-spaces   We study the fixed point set in the ideal boundary of a parabolic isometry of
a proper CAT(0)-space. We show that the radius of the fixed point set is at
most pi/2, and study its centers. As a consequence, we prove that the set of
fixed points is contractible with respect to the Tits topology.

10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat