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Generalized (ψ,α,β)—Weak Contractions for Initial Value Problems

open access: yesMathematics, 2019
A class of generalized ( ψ , α , β ) —weak contraction is introduced and some fixed-point theorems in a framework of partially ordered metric spaces are proved.
Piyachat Borisut   +3 more
doaj   +1 more source

On realizing Nakaoka's coincidence point transfer as an $S$-map [PDF]

open access: yesIllinois Journal of Mathematics, 1986
Let \(p: E\to B\) be a fiber bundle with compact manifold fiber. The author [J. Differ. Geom. 10, 39-48 (1975; Zbl 0294.55009)] defined a ''transfer'' \(\tau\) : \(H^*(E)\to H^*(B)\) in singular cohomology theory such that \(\tau p^*\) is multiplication by the Euler characteristic of the fiber. \textit{J. C.
openaire   +3 more sources

Coincidence theorems for some multivalued mappings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1984
Two coincidence theorems in a metric space are proved for a multi-valued mapping that commutes with a single-valued mapping and satisfies a general multi-valued contraction type condition.
B. E. Rhoades   +2 more
doaj   +1 more source

On Coincidence and Fixed-Point Theorems in Symmetric Spaces [PDF]

open access: gold, 2008
Seong‐Hoon Cho   +2 more
openalex   +1 more source

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