“…partial metric space, b-metric, partial b-metric, extended b-metric, rectangular metric, rectangular b-metric, Gmetric, G b −metric, S-metric, S b −metric, cone metric, cone b-metric, fuzzy metric, fuzzy b-metric, probabilistic metric, etc. For more details on all variants of generalized metric spaces, see (Budhia et al, 2017), (Collaco & Silva, 1997).…”