supported by NSFC(Grant No.10971057);the Key Project of Chinese Ministry of Education(Grant No.[2009]41);by Hu'nan Provincial Natural Science Foundation(Grant No.10JJ1001);by the Fundamental Research Funds for the Central Universities,Hu'nan University;supported by NSERC of Canada;by ERA Program of Ontario;supported in part by MITACS,CRC,and NSERC of Canada
In this paper, we develop an efficient approach to compute the equivariant normal form of delay differential equations with parameters in the presence of symmetry. We present and justify a process that involves center...
Supported by NSFC(10801056, 10971057);NSF of Guangdong Province (8451063101000730);Doctoral Program of Higher Education of China(20094407110001)
This note investigates the existence of periodic solutions for semi-ratio-dependent predator-prey models with functional response. New sharp criteria without any other nontrivial assumptions are presented by the invar...