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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/19144
Title: Periodicity and knots in delay models of population growth
Authors: Dang Vu Giang
Yongwimon Lenbury
Hanoi Institute of Mathematics
Mahidol University
Keywords: Computer Science;Decision Sciences;Engineering;Mathematics
Issue Date: 1-Feb-2008
Citation: Mathematical and Computer Modelling. Vol.47, No.3-4 (2008), 259-265
Abstract: Recently, we investigated the effect of delay on the asymptotic behavior of the model over(x, ̇) + x = f (x ({dot operator} - τ)) of population growth, when the nonlinearity f is a unimodal function. Now we prove that for large delay, there are several nonconstant (positive) periodic solutions. We also use knots theory to study periodic solutions with period 3 τ. Some of our results do not rely on the continuity of f and thus are applicable to wider range of biological problems in which the growth functions are piecewise continuous. © 2007 Elsevier Ltd. All rights reserved.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=38149035164&origin=inward
http://repository.li.mahidol.ac.th/dspace/handle/123456789/19144
ISSN: 08957177
Appears in Collections:Scopus 2006-2010

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