Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stability tests for second order linear and nonlinear delayed models   For the nonlinear second order Lienard-type equations with time-varying
delays $$ \ddot{x}(t)+\sum_{k=1}^m f_k(t,x(t),\dot{x}(g_k(t)))+\sum_{k=1}^l
s_k(t,x(h_k(t)))=0, $$ global asymptotic stability conditions are obtained. The
results are based on the new sufficient stability conditions for relevant
linear equations and are applied to derive explicit stability conditions for
the nonlinear Kaldor-Kalecki business cycle model. We also explore
multistability of the sunflower non-autonomous equation and its modifications.

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The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
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The categories of this paper are: econ
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con