On the Motion of Continuous Deformable Material Systems With a Finite Number of Parameters

Rastko Stojanović

In dynamics of continuous deformable material systems it is in some cases possible to describe the motion by a finite continuous $r$-parametric group $G_r$ of transformations. In such cases the parameters of the group can be considered as coordinates of the system, adn themotion of the system can be interpreted as motion with the finite number of degree of freedom, equal to the number of essential parameters ($r$) of the group G.