Subordinate Semimetric Spaces and Fixed Point Theorems

Table 1

Year	Author	Concept
1931	W.A Wilson [7]	quasi-metric space
1959	H. Nakano [8]	modular space
1993	S. Czerwik [9]	-metric space
2000	P. Hitzler, A. K. Seda [10]	dislocated metric space
2000	A. Branciari [11]	generalized metric space
2015	M. Jleli, B. Samet [1]	generalized metric space
2016	A. Roldán, N. Shahzad [2]	RS-space