Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quasi-({\lambda}; n)-distance-balanced graphs   For every pair of vertices u and v with d(u; v) = n, Wun G v denotes the set
of all vertices of G that are closer to u than to v. In this paper, we
introduce quasi-({\lambda}; n)-distance-balanced graphs and then study some
properties of these graphs and present a formula to construct such graphs for
arbitrarily diameter d. For n = 1, this class of graphs contains the
quasi-{\lambda}-DB graphs recently introduced by Abedi et al.
[Quasi-{\lambda}-distance-balanced graphs, Discrete Appl. Math. 227 (2017)
21{28]. Moreover, we will take a look at the problems arisen by Abedi et al.
Some problems and conjecture are involved.

28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc