一类浮游生物植化相克时滞微分方程的周期解

Abstract

Abstract:

A twodimensional nonautonomous system that arises in plankton allelopathy involving discrete time delays and periodic environmental factors is considered. We obtain the conditions for the existence of periodic solution of the system.

Key words: Plankton ecology, Allelopathy; , Time delay, Coincidence degree

CLC Number:

34D20

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SONG Xin-Yu, CHEN Lan-Sun. Periodic Solution of |a |Delay Differential Equation of |Plankton Allelopathy[J].Acta mathematica scientia,Series A, 2003, 23(1): 8-13.

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References

［1]Rice E L. Allelopathy, 2nd ed.. New York：Academic Press, 1984
［2］MaynardSmith J. Models in Ecology. Cambridge:Cambridge University, 1974.146
［3］Chattopadhyay J. Effect of toxic substances on a twospecies
competitive system. Ecol Modelling, 1996, 84: 287
［4］Mukhopadhyay A, Chattopadhyay J, Tapaswi P K. A delay differential equ

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［6］Gaines R E, Mawhin J L. Coincidence Degree and Nonlinear Differential
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Periodic Solution of |a |Delay Differential Equation of |Plankton Allelopathy

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