On the oscillation of fractional differential equations

Differential equations are studied over long years and applications of differential equations are avaible in many science areas. Numerous studies have been made about examining the oscillation of delayed fractional differential equations. Many authors have examined the subject of oscillation of the solutions of differential equations. In the first part of this thesis, it has been mentioned the results obtained on the oscillation of the differential equations. The second part of the thesis describes the necessarry definitions and theorems in differential equations for the oscillation. In the third part of thesis oscillation criteria are obtained for a class of nonlinear fractional differential equations. In the forth part of this thesis oscillation criteria are obtained for delay fractional differential equations