Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Where the Li\'enard--Levinson--Smith (LLS) theorem cannot be applied for
  a generalised Li\'enard system   We have examined a class of Li\'enard--Levinson--Smith (LLS) system having a
stable limit cycle which demonstrates the case where the LLS theorem cannot be
applied. The problem has been partly raised in a recent communication by Saha
et al., CNSNS 85, 105234 (2020) (last para of sec 4.2.2). Here we have provided
a physical approach to address this problem using the concept of energy
consumption per cycle. We have elaborated the idea through proper demonstration
by considering a generalized model system. Such issues have potential utility
in nonlinear vibration control.

4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
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The categories of this paper are: econ
26
The categories of this paper are: bayes-an
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The categories of this paper are: eess
16
The categories of this paper are: stat
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The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph