In this paper,two theorems are presented.The representation theorem states:if the Fredholm integral equation of the first kind Ax=y,with bounded L<sub>2</sub> k
It was suggested by Pantanen that the mean squared error may be used to measurethe inefficiency of the least squares estimator.Styan and Rao et al.discussed thi
The purpose of this paper is to derive the equation of axisymmetrical ring shells withvariable wall thickness in complex quantity and to give its general soluti