Abstract
In this paper, we presented some new weaker conditions on the Proinov-type contractions which guarantees that a self-mapping T has a unique fixed point in terms of rational forms. Our main results improved the conclusions provided by Andreea Fulga (On (ψ,φ)−Rational Contractions) in which the continuity assumption can either be reduced to orbital continuity, k−continuity, continuity of Tk, T-orbital lower semi-continuity or even it can be removed. Meanwhile, the assumption of monotonicity on auxiliary functions is also removed from our main results. Moreover, based on the obtained fixed point results and the property of symmetry, we propose several Proinov-type contractions for a pair of self-mappings (P,Q) which will ensure the existence of the unique common fixed point of a pair of self-mappings (P,Q). Finally, we obtained some results related to fixed figures such as fixed circles or fixed discs which are symmetrical under the effect of self mappings on metric spaces, we proposed some new types of (ψ,φ)c−rational contractions and obtained the corresponding fixed figure theorems on metric spaces. Several examples are provided to indicate the validity of the results presented.
Highlights
Metric fixed point theory has always been a hot-topic in the field of mathematical analysis
Thousands of well-known results have been published since Banach [1] initiated the study of metric fixed point theory
Proinov derived a self-mapping T on a complete metric space satisfying a general contraction of the form ψ(d(Tx, Ty)) ≤ φ(d(x, y)) and stated some metric fixed point theorems that cover many of earlier results in this field of research
Summary
Metric fixed point theory has always been a hot-topic in the field of mathematical analysis. Proinov derived a self-mapping T on a complete metric space satisfying a general contraction of the form ψ(d(Tx, Ty)) ≤ φ(d(x, y)) and stated some metric fixed point theorems that cover many of earlier results in this field of research. Secelean [7] provided a new novel fixed point theorem for a new kind of (φ, ψ)-contraction in which the involved auxiliary functions φ, ψ satisfy certain weaker conditions They demonstrated that the previous fixed point results due to Wardowski [3], Turinici [8], Piri and Kumam [9], Secelean [10] and Proinov [2] and others are consequences of their main result. Several examples are provided to indicate the validity of the results presented
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