Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Topological rigidity and actions on contractible manifolds with discrete
  singular set   The problem of equivariant rigidity is the $\Gamma$-homeomorphism
classification of $\Gamma$-actions on manifolds with compact quotient and with
contractible fixed sets for all finite subgroups of $\Gamma$. In other words,
this is the classification of cocompact $E_{fin}\Gamma$-manifolds.
  We use surgery theory, algebraic $K$-theory, and the Farrell--Jones
Conjecture to give this classification for a family of groups which satisfy the
property that the normalizers of nontrivial finite subgroups are themselves
finite. More generally, we study cocompact proper actions of these groups on
contractible manifolds and prove that the $E_{fin}$-condition is always
satisfied.

10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex