3 citations · 3 across the 2 of their papers we have counts for
4 papers
The necessary and sufficient conditions for the real Jacobian conjecture
Yuzhou Tian, Yulin Zhao
The real Jacobian conjecture claims that if is a polynomial map such that is nowhere zero, then i…
Four limit cycles in a predator-prey system of Leslie type with generalized Holling type III functional response
Yanfei Dai, Yulin Zhao, Bo Sang
This paper, as a complement to the works by Hsu et al [SIAM. J. Appl. Math. 55 (1995)] and Huang et al [J. Differential Equations 257 (2014)], aims to examine the Hopf bifurcation…
Hopf cyclicity and global dynamics for a predator-prey system of Leslie type with simplified Holling type IV functional response
Yanfei Dai, Yulin Zhao
This paper is concerned with a predator-prey model of Leslie type with simplified Holling type IV functional response, provided that it has either a unique non-degenerate positive…
On the number of limit cycles in quadratic perturbations of quadratic codimension four centers
Yulin Zhao
This paper is concerned with the bifurcation of limit cycles in general quadratic perturbations of quadratic codimension-four centers . Gavrilov and Iliev set an upper bound o…