In this research, we propose a new change in classical epidemic models by including the
change in the rate of death in the overall population. The existing models like Susceptible …

COVID-19, a new pandemic disease is becoming one of the major threats for surviving.
Many new models are arrived to study the disease mathematically. Here we are introducing …

The hybrid systems are used to study many engineering problems over a period of time.
Now, we are adding another parameter called delay to make the hybrid systems to model …

In this paper we are defining the fuzzy type of mixed delay differential equations. The
necessity of studying the mixed delay differential equation in terms of fuzzy is that the single …

Objectives: To find the absolute error of the Hybrid fuzzy differential equation with triangular
fuzzy number since its membership function has a triangular form. Methods: The third order …

Objectives: This article develops the third order Runge-Kutta method, which uses a linear
combination of the arithmetic mean, root mean square, and centroidal mean, to solve hybrid …

In this manuscript, we will use the new modified version of the Runge-Kutta method suitable
for solving fuzzy two coupled systems of Nonlinear Ordinary Differential Equations (ODE) …

Since receiving mysterious pneumonia patients at each district Govt. Hospital in Tamil Nadu,
India in April 04, 2020-April 13, 2020, the new corona virus (COVID-19) has quickly increase …