Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Derivation of All Symmetries from First Class Constraints and
  Quantization in 2+1 Dimensional Supergravity   The first class constraints in N = 1 supergravity in 2 + 1 dimensions are
used to construct a generator of three gauge symmetries (including a local
supersymmetry) that leave the action invariant. The algebra of these symmetries
closes. This generator is used to quantize the model; a ghost involving both
Bosonic and Fermionic components arises.

26
The categories of this paper are: bayes-an
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The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
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The categories of this paper are: solv-int
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The categories of this paper are: stat
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
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The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
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The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph