“…One of those is the concept of b-metric spaces which was introduced by Czerwik [6] in 1993. The concepts of metric and b-metric structures have been generalized in many ways (see [3,4,10,15,16,17,18,19,20,21,22,23]). Branciari [5] presented rectangular metric space in 2000, another such generalized metric structure, where the triangle inequality had been replaced by a so-called quadrilateral or rectangular inequality.…”