On the existence of positive periodic solutions of a delay logistic equation

• Autorzy: Zhao C.-J. , Wang K.
• Języki publikacji: EN

Abstrakty

EN

In this paper, we discuss the existence of positive periodic solutions for a delay logistic equation, by using the theory of coincidence degree.

Słowa kluczowe

EN

coincidence degree; Fredholm operator; logistic equation

PL

operator Fredholma; równanie logistyczne; stopień koincydencji

• Wydawca: Instytut Matematyczny PAN
• Czasopismo: Bulletin of the Polish Academy of Sciences. Mathematics
• Rocznik: 2002
• Tom: Vol. 50, no 2
• Strony: 155--160
• Opis fizyczny: Bibliogr. 7 poz.

Twórcy

autor

Zhao C.-J.

• Department of Mathematics, Shanghai University, Shanghai 200436, P. R. China
• Department of Mathematics, Binzhou Teachers College, Shandong, 256604, P. R. China

autor

Wang K.

• Department of Mathematics, Notheast Normal University, Chang Chun 130024, P. R. China

Bibliografia

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• [4] I. Gyori, G. Ladas, Oscillation theory of delay differential equations, Oxford Science Publications, Oxford 1991.
• [5] R. E. Gaines, J. L. Mawhin, Coincidence degree, and non-linear differential equations, Springer-Yerlag, New York 1977.
• [6] S. M. Lenhart, C. C. Travis, Global stability of a biological model with time delay, Proc. Amer. Math. Soc., 96 (1986) 75-78.
• [7] Y. Kuang, Delay differential equations with applications in population dynamics, Academic Press, Boston 1993.