Language:   Search:   Contact
Zentralblatt MATH has released its new interface!
For an improved author identification, see the new author database of ZBMATH.

Query:
Fill in the form and click »Search«...
Format:
Display: entries per page entries
Zbl 1197.34065
Xia, Yonghui; Han, Maoan
Multiple periodic solutions of a ratio-dependent predator-prey model.
(English)
[J] Chaos Solitons Fractals 39, No. 3, 1100-1108 (2009). ISSN 0960-0779

Summary: A delayed ratio-dependent predator-prey model with non-monotone functional response is investigated in this paper. Some new and interesting sufficient conditions are obtained for the global existence of multiple positive periodic solutions of the ratio-dependent model. Our method is based on Mawhin's coincidence degree and some estimation techniques for the a priori bounds of unknown solutions to the equation $Lx = \lambda$Nx. An example is represented to illustrate the feasibility of our main result. \par Editorial remark: There are doubts about a proper peer-reviewing procedure of this journal. The editor-in-chief has retired, but, according to a statement of the publisher, articles accepted under his guidance are published without additional control.
MSC 2000:
*34C25 Periodic solutions of ODE
92D25 Population dynamics

Highlights
Master Server

### Zentralblatt MATH Berlin [Germany]

© FIZ Karlsruhe GmbH

Zentralblatt MATH master server is maintained by the Editorial Office in Berlin, Section Mathematics and Computer Science of FIZ Karlsruhe and is updated daily.

Other Mirror Sites

Copyright © 2013 Zentralblatt MATH | European Mathematical Society | FIZ Karlsruhe | Heidelberg Academy of Sciences