Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cheeger estimates of Dirichlet-to-Neumann operators on infinite
  subgraphs of graphs   In this paper, we study the Dirichlet-to-Neumann operators on infinite
subgraphs of graphs. For an infinite graph, we prove Cheeger-type estimates for
the bottom spectrum of the Dirichlet-to-Neumann operator, and the higher order
Cheeger estimates for higher order eigenvalues of the Dirichlet-to-Neumann
operator.

28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat