in the modern era and through abstraction, art turns to a path in which the beginning and end of an artwork get closer together than in any other era in an attempt to make the minimum space between the subject and the object, or the work and viewer so that the work is created while receiving the minimum influence from the external world and maximum closeness to the very essence of abstraction a...

The aim of this paper is to analyze the undamped second order descriptor systems to show the possibility of transform an undamped second order descriptor system to a pure first order descriptor system ,on different ways, while stating some of its benefits. Meanwhile we will introduce pure first order systems and undamped second order systems and indicate that under some assumptions every undamp...