Abstract In this paper, we consider the existence and stability of singular patterns in a fractional Ginzburg–Landau equation with mean field. We prove three types steady-state (double fronts, single spikes, double spikes) by solving their respective consistency conditions. case small spike solution for sufficiently large spatial period studying an explicit non-local eigenvalue problem which is...

The first case of COVID-19 in India detected on January 30, 2020, after its emergence Wuhan, China, December 2019. lockdown was imposed as anemergency measure by the Indian government to prevent spread but gradually eased out due vast economic consequences. Just 15 days relaxation restrictions, Delhi became India's worst city terms cases. In this paper, we propose a variable-order fractional SI...

Abstract The purpose of this article is to formulate a simplified nonlinear fractional mathematical model illustrate the dynamics new coronavirus (COVID-19). Based on infectious characteristics COVID-19, population divided into five compartments: susceptible S ( t ), asymptomatic infection I unreported symptomatic U reported infections W T ) and recovered R collectively referred as (SIUWR). exi...

Abstract. This research paper centred on how the global silver price can be estimated and predicted by implementing Evans Price Adjustment model (EPA). Firstly, we derived equation that represent capture data involving price, demand, supply of 2013-2021. We deployed two different numerical methods solving ordinary differential (ODE). The first method is 4th order Adam Bashforth-Moulton second E...

A finite-volume formulation is presented that solves the three-dimensional, nonhydrostatic Navier–Stokes equations with the Boussinesq approximation on an unstructured, staggered, z-level grid, with the goal of simulating nonhydrostatic processes in the coastal ocean with grid resolutions of tens of meters. In particular, the code has been developed to simulate the nonlinear, nonhydrostatic int...