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COINCIDENCE AND FIXED POINT THEOREMS ON PRODUCT SPACES

Coincidence and fixed point theorems on product spaces
Authors: Gairola, U. C.; Mishra, S. N.; Singh, S. L.;

COINCIDENCE AND FIXED POINT THEOREMS ON PRODUCT SPACES

Abstract

Let \(X_1,X_2, \dots, X_n\) be metric spaces, \(\text{CL} (X_i)\) be the set of nonempty closed subsets of \(X_i\), \(i=1, \dots, n\), and \(H_i\) be the related Hausdorff metric. The authors, inspired by a result of \textit{H. Kaneko} and the reviewer [Int. J. Math. Math. Sci. 12, No. 2, 257-262 (1989; Zbl 0671.54023)] consider two systems of maps \(\{T_1, \dots, T_n\}\) and \(\{P_1, \dots, P_n\}\), being \(T_i\): \(X\to X_i\) and \(P_i\): \(X\to \text{CL} (X_i)\) with \(X= X_1 \times \cdots \times X_n\). They are called asymptotically commuting if \[ H_i \bigl(P_i (T_1 x^m, \dots, T_nx^m),\;T_i(P_1x^m, \dots, P_nx^m) \bigr) \to 0 \] whenever \(\{x^m\}\) is a sequence in \(X\) such that \(T_ix^m \to x_i\in M_i\) and \(P_ix^m \to M_i\in \text{CL} (x_i)\). Then the authors obtain coincidence point theorems for such maps which satisfy additionally conditions similar to those for hybrid contractions. Many theorems of other authors are then generalized.

Keywords

Fixed-point theorems, coincidence point, Fixed-point and coincidence theorems (topological aspects), hybrid contractions, Set-valued maps in general topology

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
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