L. V. Linchuk
Russian State Pedagogical University
Saint-Petersburg
Russia
lidiya@p110.f289.n5030.z2.fidonet.org
In the paper we consider applications of the theory of formal operators and the principle of factotization to funcional differential equations. Some examples of second and first order functional differential equations is constructed. These equtions are reduced to a more simple equations. Thus we simplify integration of some classes of functional differential equations.