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SIAMADS
2010
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13 years 6 months ago
The Abelian Hopf H mod K Theorem
We study the symmetries of periodic solutions from Hopf bifurcation in systems with finite abelian symmetries. Our main result, the Abelian Hopf H mod K Theorem, gives necessary a...
Natasha Filipski, Martin Golubitsky
APPML
2008
77views more  APPML 2008»
13 years 11 months ago
Stability of a time-varying fishing model with delay
To incorporate ecosystem effects, environmental variability and other factors that affect the population growth, the periodicity of the parameters of the model is assumed. We intr...
Leonid Berezansky, L. Idels
AMC
2008
92views more  AMC 2008»
13 years 11 months ago
Bifurcation of nontrivial periodic solutions for an impulsively controlled pest management model
In this paper, we investigate the existence of nontrivial periodic solutions for an integrated pest management model which is impulsively controlled by means of biological and che...
Paul Georgescu, Hong Zhang, Lansun Chen