Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the notion of persistence of excitation for linear switched systems   The paper formulates the concept of persistence of excitation for
discrete-time linear switched systems, and provides sufficient conditions for
an input signal to be persistently exciting. Persistence of excitation is
formulated as a property of the input signal, and it is not tied to any
specific identification algorithm. The results of the paper rely on realization
theory and on the notion of Markov-parameters for linear switched systems.

20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg