Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on "Duality of x and psi in quantum mechanics" by Faraggi and
  Matone   The dual Schrodinger equation for x in terms of psi derived by Faraggi and
Matone [hep-th/9606063] with techniques inspired by field theory duality can be
derived almost trivially from differential calculus.

18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat