Fixed point results on subgraphs of directed graphs
Mathematical Sciences, Volume 7, No. 1, Article 41, Year 2013
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In this paper, we obtain some fixed point results on subgraphs of directed graphs. We show that the Caristi fixed point theorem and a version of Knaster-Tarski fixed point theorem are special cases of our results. 2010 MSC: 47H10; 05C20; 54H25