A FIXED POINT APPROACH TO THE ORTHOGONAL STABILITY OF MIXED TYPE FUNCTIONAL EQUATIONS

YOUNG JU JEON, CHANG IL KIM
2015 East Asian Mathematical Journal  
In this paper, we investigate the following orthogonally additivequadratic functional equation and prove the generalized Hyers-Ulam stability for it in orthogonality spaces by using the fixed point method.
doi:10.7858/eamj.2015.043 fatcat:onb4zhtxxbc7fiug4qn7jaxkpu