Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hamilton Operators, Discrete Symmetries, Brute Force and SymbolicC++   To find the discrete symmetries of a Hamilton operator $\hat H$ is of central
importance in quantum theory. Here we describe and implement a brute force
method to determine the discrete symmetries given by permutation matrices for
Hamilton operators acting in a finite-dimensional Hilbert space. Spin and Fermi
systems are considered as examples. A computer algebra implementation in
SymbolicC++ is provided.

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The categories of this paper are: stat
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
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The categories of this paper are: adap-org
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The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio