Document Type : Full Length Article
Department of Mathematics, Hassan II University, Casablanca, Morocco.
This given paper can be considered as a continuation of previous work, doing on cancer models and their control by a set-valued method, in the context of viability theory. We analyze a class models of ordinary differential equations, taking into account the possibility to directly acting on tumor. However we can augment the class by a simple ordinary differential equation of the tumor control term, and join it to the other variables state. This will allow to exploit results to generalize the approach.