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Common fixed point and invariant approximation in Menger convex metric spaces

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Necessary conditions for the existence of common fixed points for noncommuting mappings satisfying generalized contractive conditions in a Menger convex metric space are obtained. As an application, related results on best approximation are derived. Our results generalize various well known results.

Abstract

Necessary conditions for the existence of common fixed points for noncommuting mappings satisfying generalized contractive conditions in a Menger convex metric space are obtained. As an application, related results on best approximation are derived. Our results generalize various well known results.

참고문헌 (22)

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  13. N. Hussain, "Common fixed point and invariant approximation results for noncommuting generalized (f, g)-nonexpansive maps", Journal of Mathematical Analysis and Applications, 321(2), pp.851~861 (2006)
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  18. G. Meinardus, "Invarianz bei linearen Approximationen", Archive for Rational Mechanics and Analysis, 14, pp.301~303 (1963)
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  20. D. O’Regan, "Generalized I-contractions and point wise R-subweakly commuting maps", Acta Mathematica Sinica (2007)
  21. N. Shahzad, "Invariant approximations and R-subweakly commuting maps", Journal of Mathematical Analysis and Applications, 257(1), pp.39~45 (2001)
  22. S. P. Singh, "An application of a fixed-point theorem to approximation theory", Journal of Approximation Theory, 25(1), pp.89~90 (1979)

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