Some convergence theorems for asymptotically pseudocontractive mappings
Rafiq, Arif
Kodai Math. J., Tome 30 (2007) no. 1, p. 74-84 / Harvested from Project Euclid
Let K be a nonempty closed convex subset of a real Banach space E,T : K → K a uniformly L-Lipschitzian asymptotically pseudocontractive mapping with sequence {kn}n ≥ 0 $\subset$ [1, ∞), limn → ∞ kn = 1 such that p $\in$ F(T) = {x $\in$ K : Tx = x}. Let {αn}n ≥ 0 $\subset$ [0,1] be such that ∑n ≥ 0 αn = ∞ and limn → ∞ αn = 0. For arbitrary x0 $\in$ K and {vn}n ≥ 0 in K let {xn}n ≥ 0 be iteratively defined by ¶ xn + 1 = (1 - αn)xn + αn Tnvn, n ≥ 0, ¶ satisfying limn → ∞ ||vn - xn|| = 0. Suppose there exists a strictly increasing function φ : [0, ∞) → [0, ∞), φ (0) = 0 such that ¶ nx - p, j (x - p)> ≤ kn ||x - p||2 - φ (||x - p||), ∀x $\in$ K. ¶ Then {xn}n ≥ 0 converges strongly to p $\in$ F (T). ¶ The remark at the end is important.
Publié le : 2007-03-14
Classification: 
@article{1175287623,
     author = {Rafiq, Arif},
     title = {Some convergence theorems for asymptotically pseudocontractive mappings},
     journal = {Kodai Math. J.},
     volume = {30},
     number = {1},
     year = {2007},
     pages = { 74-84},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1175287623}
}
Rafiq, Arif. Some convergence theorems for asymptotically pseudocontractive mappings. Kodai Math. J., Tome 30 (2007) no. 1, pp.  74-84. http://gdmltest.u-ga.fr/item/1175287623/