22 citations · 22 across the 4 of their papers we have counts for
4 papers
On variational principles of metric mean dimension on subset in Feldman-Katok metric
Kunmei Gao, Ruifeng Zhang
In this paper, we studied the metric mean dimension in Feldman-Katok(FK for short) metric. We introduced the notions of FK-Bowen metric mean dimension and FK-Packing metric mean di…
Topological multiple recurrence of weakly mixing minimal systems for generalized polynomials
Ruifeng Zhang, Jianjie Zhao
Let be a weakly mixing minimal system, be integer-valued generalized polynomials and be non-degenerate. Then there exists a resid…
Existence of Optical Vortices
Yisong Yang, Ruifeng Zhang
Optical vortices arise as phase singularities of the light fields and are of central interest in modern optical physics. In this paper, some existence theorems are established for…
Dynamics of Electrostatic MEMS Actuators
Yisong Yang, Ruifeng Zhang, Le Zhao
Electrostatic actuators are simple but important switching devices for MEMS applications. Due to the difficulties associated with the electrostatic nonlinearity, precise mathematic…