Common fixed points for noncontinuous nonself maps on nonmetric spaces.(English)Zbl 0928.54043

Summary: Common fixed-point theorems for sets of two to four noncontinuous maps of a subset $$D$$ of a semimetric space $$X$$ into $$X$$ are proven. The role of weakly biased and weakly compatible maps in securing common fixed points in highlighted.

MSC:

 54H25 Fixed-point and coincidence theorems (topological aspects)