Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamics of galaxy cores and supermassive black holes   Recent work on the dynamical evolution of galactic nuclei containing
supermassive black holes is reviewed. Topics include galaxy structural
properties; collisionless and collisional equilibria; loss-cone dynamics; and
dynamics of binary and multiple supermassive black holes.

10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol