Pan African Medical Journal. 2017; 28:161 doi:10.11604/pamj.2017.28.161.12439 This article is available online at: http://www.panafrican-med-journal.com/content/article/28/161/full/ © Mustafa Nkaoui et al. The Pan African Medical Journal ISSN 1937-8688. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/...

In [], Choudhury proved that if X is a complete metric space, then every weak C-contraction has a unique fixed point; see [, Theorem .]. This result was generalized to a complete, partially ordered metric space in []; see [, Theorems ., . and .]. There were some generalizations of a metric such as a -metric, aD-metric, aG-metric, a conemetric, and a complex-valuedmetric. The notion...

mustafa lutfi el-manfaluti is one of the literary men whose writing method was effective on literary change of the previous generation. he was born in egypt. he was interested in reading literary books; that’s why he had completed the science by mohammad abdoh. he had translated many stories and articles and had applied some french stories in his writings. his books are the most eloquent arabic...