Abstract:
Existence and uniqueness theorems are obtained for a fixed point of a mapping of a complete metric space into itself, that generalize the theorems of L. V. Kantorovich for smooth mappings of Banach spaces. These results are extended to the coincidence points of both ordinary and maultivalued mappings acting in metric spaces.
This work was supported by the Ministry of Education and Science of the Russian Federation (project nos. 1.962.2017/4.6 and 3.8515.2017/BCh) and by the Russian Foundation for Basic Research (project nos. 17-51-12064, 17-41-680975, 18-01-00106, and 19-01-00080).
Citation:
A. V. Arutyunov, E. S. Zhukovskiy, S. E. Zhukovskiy, “Kantorovich's Fixed Point Theorem in Metric Spaces and Coincidence Points”, Optimal control and differential equations, Collected papers. On the occasion of the 110th anniversary of the birth of Academician Lev Semenovich Pontryagin, Trudy Mat. Inst. Steklova, 304, Steklov Math. Inst. RAS, Moscow, 2019, 68–82; Proc. Steklov Inst. Math., 304 (2019), 60–73