Semnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-682213120220301Comparison of Harder stability and Rus stability of Mann iteration procedure and their equivalence409420550810.22075/ijnaa.2021.17495.1939ENGutti Venkata RavindranadhBabuDepartment of Mathematics, Andhra University, Visakhapatnam-530 003, India0000-0002-6272-2645GedalaSatyanarayanaDepartment of Mathematics, Andhra University, Visakhapatnam-530 003, India.Journal Article20190325In this paper, we study the stability of Mann iteration procedure in two directions, namely one due to Harder and the second one due to Rus with respect to a map $T:K\to K$ where $K$ is a nonempty closed convex subset of a normed linear space $X$ and there exist $\delta\in(0,1)$ and $L\geq 0$ such that $||Tx-Ty||\leq\delta||x-y||+L||x-Tx||$ for $x,y\in K$. Also, we show that the Mann iteration procedure is stable in the sense of Rus may not imply that it is stable in the sense of Harder for weak contraction maps. Further, we compare and study the equivalence of these two stabilities and provide examples to illustrate our results.https://ijnaa.semnan.ac.ir/article_5508_73c55573cbd9c4cd62f4df92bd2278b4.pdf