Sehie Park
The National Academy of Sciences, Republic of Korea, Seoul 06579; and Department of Mathematical Sciences, Seoul National University, Seoul 08826, Korea.
Recently, we improved our long-standing Metatheorem in Fixed Point Theory. In this paper, as its applications, some well-known order-theoretic fixed point theorems are equivalently formulated as existence theorems on maximal elements, common fixed points, common stationary points, and others. Such theorems are the ones due to Banach, Nadler, Browder–Göhde–Kirk, Caristi–Kirk, Caristi, Brøndsted, and possibly many others.
Keywords: Fixed point theorem, Pre-order, Metric space, Fixed point, Stationary point, Maximal element.
Park, S. (2022). Equivalents of ordered fixed point theories of Kirk, Caristi, Nadler, Banach, and others. Advances in the Theory of Nonlinear Analysis and its Application , 6 (4), 420-432.