Dynamics of the age structure of the population developing freely

The article deals with the problems of population dynamics of the age structure of the population. In contrast to the classical models of population dynamics, which deal with a finite number of features and are described by ordinary differential equations, the study of continuous models with an age structure is of great importance. The existence and uniqueness theorems for solving the corresponding non-local boundary value problems are proved. Stationary States of models are investigated and lemmas on stationary solutions are proved.