In this paper. we propose an original complex network model for an epidemic problem in an heterogeneous geographical area. The complex network is constructed by coupling nonidentical instances of a HIV/AIDS epidemiological model for which a disease-free equilibrium and an endemic equilibrium can coexist. After proving the existence of a positively invariant region for the solutions of... https://www.kingarte.com/product-category/food-servicecommercial-kitchen-equipmentcooking-equipmentcommercial-cooking-equipment-parts/