Application of fixed point theorems to best simultaneous approximation in ordered semi-convex structure

@article{Hussain2012ApplicationOF,
  title={Application of fixed point theorems to best simultaneous approximation in ordered semi-convex structure},
  author={Nawab Hussain and Hemant Kumar Pathak and Shiv Kant Tiwari},
  journal={The Journal of Nonlinear Sciences and Applications},
  year={2012},
  volume={05},
  pages={294-306}
}
In this chapter, we establish some common fixed point results for uniformly Cq-commuting asymptotically S-nonexpansive maps in a Banach space with semi-convex structure. We also extend the main results of Ćirić[34, 35] to semi-convex structure and obtain common fixed point results for Banach operator pair. The existence of invariant best simultaneous approximation in ordered semi-convex structure is also established. 

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References

SHOWING 1-10 OF 51 REFERENCES

COMMON FIXED POINT AND INVARIANT APPROXIMATION IN MENGER CONVEX METRIC SPACES

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,

Common fixed-points for Banach operator pairs in best approximation

Common fixed points for Banach operator pairs with applications

Common Fixed Point and Approximation Results for Noncommuting Maps on Locally Convex Spaces

Common fixed point results for some new classes of nonlinear noncommuting maps on a locally convex space are proved. As applications, related invariant approximation results are obtained. Our work

Convergence theorems for nonself asymptotically nonexpansive mappings

Applications of fixed point theorems to invariant approximation

We prove some fixed point theorems. As applications we obtain Brosowski-Meinardus type theorems on invariant approximations on a class of nonconvex sets in locally bounded topological vector spaces.

A FIXED POINT THEOREM FOR ASYMPTOTICALLY NONEXPANSIVE MAPPINGS

Let K be a subset of a Banach space X. A mapping F.K-+KI& said to be asymptotically nonexpansive if there exists a sequence {ki} of real numbers with £?-+1 as /'-►co such that WF'x—F'yW^kiWx—yW, yE

APPLICATION OF FIXED POINT THEOREMS IN APPROXIMATION THEORY

Generalized I-Contractions and Pointwise R-Subweakly Commuting Maps

The existence of common fixed points and invariant approximations for pointwise R-subweakly commuting and compatible maps is established. Our results unify and generalize various known results to a

Convexity of Chebyshev Sets

In Theorem 3.5 we saw that every closed convex subset of a Hilbert space is a Chebyshev set. In this chapter we will study the converse problem of whether or not every Chebyshev subset of a Hilbert
...