the demicontractive mappings. Some variants of the Mann iteration that ensure the strong
convergence, like the (CQ) algorithm and a variant for the asymptotically demicontractive
mappings are also considered. The usual framework of our study is a (real) Hilbert space
and only to a certain extent some particular Banach spaces. Historical aspects are pointed
out and some applications for the convex feasibility problem are discussed.