^{}Department of Mathematics, Zanjan Branch, Islamic Azad University, Zanjan, Iran.

Abstract

We shall prove an existence inequality for two maps on Banach algebra, with an example and in sequel we have some results on R and Rn spaces. This way can be applied for generalization of some subjects of mathematics in teaching which how we can extend a math problem to higher level.

References

[1] G. Klambauer, Mathematical Analysis, Marcel Dekker, Inc., New York, 1975. [2] R. G. Douglas, Banach Algebra Techniques in Operator Theory, Springer- Verlag, New York, 1998.