Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: From Heisenberg uniqueness pairs to properties of the Helmholtz and
  Laplace equations   The aim of this paper is to establish uniqueness properties of solutions of
the Helmholtz and Laplace equations. In particular, we show that if two
solutions of such equations on a domain of R d agree on two intersecting d --
1-dimensional submanifolds in generic position, then they agree everywhere.

1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph