Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraint structure in modified Faddeev-Jackiw method   We show that in modified Faddeev-Jackiw formalism, first and second class
constraints appear at each level, and the whole constraint structure is in
exact correspondence with level by level method of Dirac formalism.

27
The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
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The categories of this paper are: stat
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con