Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Green's functions for even order boundary value problems   In this paper we will show several properties of the Green's functions
related to various boundary value problems of arbitrary even order. In
particular, we will write the expression of the Green's functions related to
the general differential operator of order 2n coupled to Neumann, Dirichlet and
mixed boundary conditions, as a linear combination of the Green's functions
corresponding to periodic conditions on a different interval.
  This will allow us to ensure the constant sign of various Green's functions
and to deduce spectral results.

31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an