This article addresses the critical need for understanding the dynamics of COVID-19
transmission and the role of booster vaccinations in managing the pandemic. Despite …

The time delay between the conversion of susceptible individuals into infected individuals is
considered for the purpose of assessing the stability of the fractional order delay …

This research examines the transmission dynamics of the Omicron variant of COVID-19
using SEIQIcRVW and SQIRV models, considering the delay in converting susceptible …

In this study, we propose a fractional-order epidemic model of the Omicron variant. We
provide analyses of the solutionʼs positivity, boundedness, existence, and uniqueness. The …

The current values of many populations depend on the past values of the population. In
many cases, this dependence is caused by the time certain processes take. This …

This paper presents the construction of a dynamic nonlinear SSASPAIR mathematical model
for cancer, which is caused by smoking and drug addiction. The fundamentals of positivity …