Remarks on some basic concepts in the KKM theory
Keywords: 47H04; 47H10; 49J40; 52A99; 54C65; 54H25; 58E35; 90D13; 91B50; KKM type theorems; Fixed point; Abstract convex space; Generalized convex (G-convex) space; H-space; Partial KKM principle; KKM space;