Abstract
Possibility of the reduction of a coincidence problem to a fixed point problem is investigated for one-valued and multivalued mappings of partially ordered sets. New fixed point theorems are proved. Connections of the obtained results with well-known fixed point theorems and some recent results on coincidences of two mappings are considered.
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Fomenko, T.N., Podoprikhin, D.A. Fixed points and coincidences of mappings of partially ordered sets. J. Fixed Point Theory Appl. 18, 823–842 (2016). https://doi.org/10.1007/s11784-016-0327-7
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DOI: https://doi.org/10.1007/s11784-016-0327-7