Deformation flows are the flows incorporating shear, strain and rotational components.
These flows are ubiquitous in the geophysical flows, such as the ocean and atmosphere …

We study the existence of twist periodic solutions of second order differential equations with
an attractive–repulsive singularity. Such twist periodic solutions are stable in the sense of …

In this paper, the problem of periodic solutions is studied for Liénard equations with
anindefinite singularity x′′(t)+ f (x (t)) x′(t)+ φ (t) xm (t)− α (t) x μ (t)= 0, where f:(0,+∞)→ R …

This review shows some recent results on the existence, multiplicity, and stability of periodic
solutions for a large class of micro-electro-mechanical parallel plate actuators, for which the …

In this paper, we study the oscillation of a gas-filled spherical bubble immersed in an infinite
domain of incompressible liquid under the influence of a time-periodic acoustic field. The …

In this paper, the problem of periodic solutions is studied for second order differential
equations with indefinite singularities x ″(t)+ f (x (t)) x′(t)+ φ (t) xm (t)− α (t) x μ (t)+ β (t) xy …

For the linear 1D shallow-water system with a variable bottom profile, we study the inverse
problem of the existence of a periodic bottom profile that allows a periodic travelling wave …

Nonlinear Higher Order Differential and Integral Coupled Systems: Third-order three point
systems with dependence on the first d Page 1 Chapter 1 Third-order three point systems with …

A periodic problem of Ambrosetti–Prodi type is studied in this paper for the Liénard equation
with a singularity of attractive type x ″+ f (x) x′+ φ (t) x m+ r (t) x μ= s, where f:(0,+∞)→ R is …

A damped Duffing equation with a singularity is considered in this paper, where the elastic
restoring force g has a singularity at origin and satisfies superlinear condition at infinity. By …