Abstract:
The basic aim of this thesis is to consider the Fejer's inequality which is closely related
to Hadamard's inequality, when we consider the weight function with it. We try to
collect many known theorems from the literature related to Hadamard's inequality
and present their di erent results in terms of Fejer's inequality. Examples are also
considered regarding to this inequality. Furthermore, there is an emphasis on Schur-
convexity and Schur concavity, playing the role in Fejer's inequality.
