Resumen de On the generalizations of Siegel's fixed point theorem

J. S. Jung, S. S. Chang, B. S. Lee, Y. J. Cho, S. M. Kang

• In this paper, we establish a new version of Siegel's fixed point theorem in generating spaces of quasi-metric family. As consequences, we obtain general versions of the Downing-Kirk's fixed point and Caristi's fixed point theorem in the same spaces. Some applications of these results to fuzzy metric spaces and probabilistic metric spaces are presented.