Some Common Fixed Point Results for Generalized $\alpha_*$-$\psi$-contractive Multi-valued Mappings on Ordered Metric Spaces with Application to Initial Value Problem

by Sajjad Pahlavany, Jalal Hassanzadeh Asl, Shahram Rezapour
Published 2021-05-01

Controlling of pandemic COVID-19 using optimal control theory

by Shahriar Seddighi Chaharborj, Sarkhosh Seddighi Chaharborj, Jalal Hassanzadeh Asl, Pei See Phang
Published 2021-07-01