The aim of the present paper is to state a simplified nonlinear mathematical model to
describe the dynamics of the novel coronavirus (COVID-19). The design of the mathematical …

In this paper we propose a fuzzy Laplace transform and under the strongly generalized
differentiability concept, we use it in an analytic solution method for some fuzzy differential …

Malaria is a mosquito-borne infectious disease caused by the Plasmodium parasite. It is
prevalent in many regions of the globe, particularly in sub-Saharan Africa, where it is a major …

This work discusses heat transfer effects on magnetohydrodynamics Jeffery–Hamel
nanofluid flow with various nanoparticles, namely copper Cu and silver Ag. This work …

In this paper, we study different numerical methods for solving fuzzy equations, dual fuzzy
equations, fuzzy differential equations (FDEs) and fuzzy partial differential equations (PDEs) …

In the present note it is shown that the examples presented in a recent paper by
Allahviranloo et al., are incorrect. Namely, the “exact solutions” proposed by the authors are …

A natural way to model dynamic systems under uncertainty is to use fuzzy initial value
problems (FIVPs) and related uncertain systems. In this paper, we express the fuzzy Laplace …

In this paper, we study the class of fuzzy differential equations where the dynamics is given
by a continuous fuzzy map** which is obtained via Zadeh's extension principle. We get a …

In this paper, a new fractional-order complex chaotic system (FOCCS) is proposed and
studied. Firstly, the dissipativity and stability are discussed. Secondly, the dynamical …

Differential equations occur in many fields of science, engineering and social science as it is
a natural way of modeling uncertain dynamical systems. A bipolar fuzzy set model is useful …