Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Description of the Chemical Reaction Path in the HCO Molecule: A
  Combined Configuration Interaction and Tight-Binding Approach   It is demonstrated that the reaction path for a polyatomic molecule (applied
to the HCO molecule) is easily calculated via ab-initio configuration
interaction (CI) total energies. This Hamiltonian not only reproduces the CI
calculations accurately and efficiently, but also effectively corrects any CI
energies happening to erroneously converge to excited states.

37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
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The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
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The categories of this paper are: q-fin
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The categories of this paper are: eess
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-bio
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The categories of this paper are: atom-ph
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph