Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Conway's drum quilts   A `transplantable pair' is a pair of glueing diagrams that can be used to
create pairs of plane domains that are isospectral for the Laplace operator. We
present a host of transplantable pairs worked out by John Conway using his
theory of quilts

4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: stat
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con