Natural and manmade complex systems are comprised of different elementary units, being
either system components or diverse subsystems as in the case of networked systems …

A lattice random walk is a mathematical representation of movement through random steps
on a lattice at discrete times. It is commonly referred to as Pólya's walk when the steps occur …

We study two non-Markovian gene-expression models in which protein production is a
stochastic process with a fat-tailed nonexponential waiting time distribution (WTD). For both …

We study primordial black holes (PBHs) formation in the excursion set theory (EST) in a vast
range of PBHs masses with and without confirmed constraints on their abundance. In this …

The Hubble tension may introduce a new course of action to revise the standard Lambda
cold dark matter (ΛCDM) model to unravel dark energy and dark matter physics. The Hubble …

Structures in the Universe are arranged into the cosmic web. Distributions, statistics, and
evolutions of the structures can be used as probes for cosmological models. We investigate …

The problem of analyzing the Itô stochastic differential system and its filtering has received
attention. The classical approach to accomplish filtering for the Itô SDE is the Kushner …