Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stationary C*-dynamical systems   We introduce the notion of stationary actions in the context of C*-algebras.
We develop the basics of the theory, and provide applications to several
ergodic theoretical and operator algebraic rigidity problems.

37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg