Published online by Cambridge University Press: 20 November 2018
Much current research is concerned with the fixed points of contractive mappings (mappings which shrink distance in some manner) from a metric space into itself. In this remark we shall point out that most mappings treated in the literature are very special in the sense that all these mappings satisfy a condition which is rather severe: every periodic point must necessarily be a fixed point.
This is an extract from the author's M.Sc. thesis. The author gratefully acknowledges the help given by his supervisor, Professor T. D. Rogers.