Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fully coupled drift-less Forward and backward Stochastic Differential
  Equations in a degenerate case   Existence and uniqueness results of fully coupled forward stochastic
differential equations without drifts and backward stochastic differential
equations in a degenerate case are obtained for an arbitrarily large time
duration.

30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin