Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The integral type gauge transformation and the additional symmetry for
  the constrained KP hierarchy   In this paper, the compatibility between the integral type gauge
transformation and the additional symmetry of the constrained KP hierarchy is
given. And the string-equation constraint in matrix models is also derived.

7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th