Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Amalgamated product of free groups and residual solvability   In this paper we study residual solvability of the amalgamated product of two
finitely generated free groups, in the case of doubles. We find conditions
where this kind of structure is residually solvable, and show that in general
this is not the case. However this kind of structure is always
meta-residually-solvable.

7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
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
8
The categories of this paper are: hep-ex