The Exact Solutions of a Diffusive SIR Model via Symmetry Groups
Infrared Thermometers The focus of this paper is to investigate the exact solutions of a diffusive susceptible-infectious-recovered (SIR) epidemic model, characterized by a nonlinear incidence.A four-dimensional Lie point symmetry algebra is obtained for this model.We utilize the Lie symmetries to deduce the optimal system of one-dimensional subalg