Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multiobjective Based LQR Design for Fractional Order Systems with
  Perturbations using PESA-II Algorithm   In this work perturbed LQR design for fractional-order systems with multiple
performance indices is proposed.

33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ