Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Optimal Control of Relaxation Systems   The relaxation systems are an important subclass of the passive systems that
arise naturally in applications. We exploit the fact that they have highly
structured state-space realisations to derive analytical solutions to some
simple H-infinity type optimal control problems. The resulting controllers are
also relaxation systems, and often sparse. This makes them ideal candidates for
applications in large-scale problems, which we demonstrate by designing simple,
sparse, electrical circuits to optimally control large inductive networks and
to solve linear regression problems.

26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg