Coronaviruses are a large family of viruses that cause different symptoms, from mild cold to
severe respiratory distress, and they can be seen in different types of animals such as …

In the last decades, many methodologies have been suggested to depict behaviors of some
complex world's problems arising in many academic fields. One of these problems is the …

In this study, a new approach to COVID-19 pandemic is presented. In this context, a
fractional order pandemic model is developed to examine the spread of COVID-19 with and …

The present paper investigates the critical normal form coefficients for the one-parameter
and two-parameter bifurcations of a discrete-time Bazykin–Berezovskaya prey-predator …

In the present paper, interactions between COVID-19 and diabetes are investigated using
real data from Turkey. Firstly, a fractional order pandemic model is developed both to …

In this paper, a novel type of generalized Kopel triopoly model is presented to reveal the
complex dynamics and transitions between different dynamic behaviors. First, based on …

We reformulate a stochastic epidemic model consisting of four human classes. We show that
there exists a unique positive solution to the proposed model. The stochastic basic …

This study proposes a new fractional mathematical model to study the impact of vaccination
on COVID-19 outbreaks by categorizing infected people into non-vaccinated, first dose …

In a short time, many illustrative studies have been conducted on the mathematical modeling
and analysis of COVID-19. There are not enough studies taking into account the vaccine …

In this paper, we investigate novel solutions of fractional‐order option pricing models and
their fundamental mathematical analyses. The main novelties of the paper are the analysis …