Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Self-converse mixed graphs are extremely rare   A mixed graph is cospectral to its converse, with respect to the usual
adjacency matrices. Hence, it is easy to see that a mixed graph whose
eigenvalues occur uniquely, up to isomorphism, must be isomorphic to its
converse. It is therefore natural to ask whether or not this is a common
phenomenon. This note contains the theoretical evidence to confirm that the
fraction of self-converse mixed graphs tends to zero.

35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int