On some applications of the controllability principle for fixed point equations

A method of lower and upper solutions for control problems and application to a model of bone marrow transplantation

“…Two applications for a system modeling cell dynamics related to leukemia have been included the work of Haplea et al (2021) (see also Parajdi et al, 2023) and three others in that of Precup (2022), of which two are self-control problems. Many other illustrations of the above principle can be derived from the rich literature in control theory (see, e.g., Coron, 2007).…”