Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Higher Order Fractional Variational Optimal Control Problems with
  Delayed Arguments   This article deals with higher order Caputo fractional variational problems
with the presence of delay in the state variables and their integer higher
order derivatives.

33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th