The main purpose of the paper consists in illustrating a procedure for expressing the equations of motion for a general time-dependent constrained system. Const
A stochastic SIR epidemic dynamic model with distributed-time-delay, for a two-scale dynamic population is derived. The distributed time delay is the varying na
The starting point in this note is f(R) modified gravity in a cosmological setting. We assume a spatially flat universe to describe late-time cosmology and the
In this paper, the existence and uniqueness of the global generalized solution and the global classical solution for the Cauchy problem of the singularly pertur
We present a class of non-convective classical solutions for the multidimensional incompressible Navier-Stokes equation. We validate such class as a representat