Iterative solution of nonlinear equations of the pseudo-monotone type in Banach spaces

A. M. Saddeek; Sayed A. Ahmed

Archivum Mathematicum (2008)

  • Volume: 044, Issue: 4, page 285-293
  • ISSN: 0044-8753

Abstract

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The weak convergence of the iterative generated by J ( u n + 1 - u n ) = τ ( F u n - J u n ) , n 0 , ( 0 < τ = min { 1 , 1 λ } ) to a coincidence point of the mappings F , J : V V is investigated, where V is a real reflexive Banach space and V its dual (assuming that V is strictly convex). The basic assumptions are that J is the duality mapping, J - F is demiclosed at 0 , coercive, potential and bounded and that there exists a non-negative real valued function r ( u , η ) such that sup u , η V { r ( u , η ) } = λ < r ( u , η ) J ( u - η ) V ( J - F ) ( u ) - ( J - F ) ( η ) V , u , η V . Furthermore, the case when V is a Hilbert space is given. An application of our results to filtration problems with limit gradient in a domain with semipermeable boundary is also provided.

How to cite

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Saddeek, A. M., and Ahmed, Sayed A.. "Iterative solution of nonlinear equations of the pseudo-monotone type in Banach spaces." Archivum Mathematicum 044.4 (2008): 285-293. <http://eudml.org/doc/250462>.

@article{Saddeek2008,
abstract = {The weak convergence of the iterative generated by $J(u_\{n+1\}-u_\{n\})= \tau (Fu_\{n\}-Ju_\{n\})$, $n \ge 0$, $\big (0< \tau =\min \big \lbrace 1,\frac\{1\}\{\lambda \}\big \rbrace \big )$ to a coincidence point of the mappings $F,J\colon V \rightarrow V^\{\star \}$ is investigated, where $V$ is a real reflexive Banach space and $V^\{\star \}$ its dual (assuming that $V^\{\star \}$ is strictly convex). The basic assumptions are that $J$ is the duality mapping, $J-F$ is demiclosed at $0$, coercive, potential and bounded and that there exists a non-negative real valued function $r(u,\eta )$ such that \[ \sup \_\{u,\eta \in V\} \lbrace r(u,\eta )\rbrace =\lambda < \infty \]\[ r(u,\eta )\Vert J(u- \eta ) \Vert \_\{V^\{\star \}\}\ge \Vert (J -F)(u)-(J-F)(\eta ) \Vert \_\{V^\{\star \}\}\,, \quad \forall ~ u,\eta \in V\,. \] Furthermore, the case when $V$ is a Hilbert space is given. An application of our results to filtration problems with limit gradient in a domain with semipermeable boundary is also provided.},
author = {Saddeek, A. M., Ahmed, Sayed A.},
journal = {Archivum Mathematicum},
keywords = {iteration; coincidence point; demiclosed mappings; pseudo-monotone mappings; bounded Lipschitz continuous coercive mappings; filtration problems; iteration; coincidence point; demiclosed mapping; pseudo-monotone mapping; bounded Lipschitz continuous coercive mapping; filtration problem},
language = {eng},
number = {4},
pages = {285-293},
publisher = {Department of Mathematics, Faculty of Science of Masaryk University, Brno},
title = {Iterative solution of nonlinear equations of the pseudo-monotone type in Banach spaces},
url = {http://eudml.org/doc/250462},
volume = {044},
year = {2008},
}

TY - JOUR
AU - Saddeek, A. M.
AU - Ahmed, Sayed A.
TI - Iterative solution of nonlinear equations of the pseudo-monotone type in Banach spaces
JO - Archivum Mathematicum
PY - 2008
PB - Department of Mathematics, Faculty of Science of Masaryk University, Brno
VL - 044
IS - 4
SP - 285
EP - 293
AB - The weak convergence of the iterative generated by $J(u_{n+1}-u_{n})= \tau (Fu_{n}-Ju_{n})$, $n \ge 0$, $\big (0< \tau =\min \big \lbrace 1,\frac{1}{\lambda }\big \rbrace \big )$ to a coincidence point of the mappings $F,J\colon V \rightarrow V^{\star }$ is investigated, where $V$ is a real reflexive Banach space and $V^{\star }$ its dual (assuming that $V^{\star }$ is strictly convex). The basic assumptions are that $J$ is the duality mapping, $J-F$ is demiclosed at $0$, coercive, potential and bounded and that there exists a non-negative real valued function $r(u,\eta )$ such that \[ \sup _{u,\eta \in V} \lbrace r(u,\eta )\rbrace =\lambda < \infty \]\[ r(u,\eta )\Vert J(u- \eta ) \Vert _{V^{\star }}\ge \Vert (J -F)(u)-(J-F)(\eta ) \Vert _{V^{\star }}\,, \quad \forall ~ u,\eta \in V\,. \] Furthermore, the case when $V$ is a Hilbert space is given. An application of our results to filtration problems with limit gradient in a domain with semipermeable boundary is also provided.
LA - eng
KW - iteration; coincidence point; demiclosed mappings; pseudo-monotone mappings; bounded Lipschitz continuous coercive mappings; filtration problems; iteration; coincidence point; demiclosed mapping; pseudo-monotone mapping; bounded Lipschitz continuous coercive mapping; filtration problem
UR - http://eudml.org/doc/250462
ER -

References

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  1. Badriev, I. B., Karchevskii, M. M., On the convergance of the iterative process in Banach spaces, Issledovaniya po prikladnoi matematike (Investigations in Applied Mathematics) 17 (1990), 3–15, in Russian. (1990) MR1127806
  2. Brezis, H., Nirenberg, L., Stampacchia, G., A remark on Ky Fan’s minimax principle, Boll. Un. Mat. Ital. 6 (1972), 293–300. (1972) Zbl0264.49013MR0324498
  3. Gajewski, H., Gröger, K., Zacharias, K., Nichtlineare Operatorgleichungen und Operatordifferentialgleichungen, Akademie Verlag Berlin, 1974. (1974) MR0636412
  4. Goebel, K., Kirk, W. A., Topics in metric fixed point theory, Cambridge Stud. Adv. Math. 28 (1990). (1990) Zbl0708.47031MR1074005
  5. Istratescu, V.I., Fixed Point Theory, Reidel, Dordrecht, 1981. (1981) Zbl0465.47035MR0620639
  6. Karchevskii, M. M., Badriev, I. B., Nonlinear problems of filtration theory with dis continuous monotone operators, Chislennye Metody Mekh. Sploshnoi Sredy 10 (5) (1979), 63–78, in Russian. (1979) MR0628672
  7. Lions, J. L., Quelques Methods de Resolution des Problemes aux Limites Nonlineaires, Dunod and Gauthier-Villars, 1969. (1969) MR0259693
  8. Lyashko, A. D., Karchevskii, M. M., On the solution of some nonlinear problems of filtration theory, Izv. Vyssh. Uchebn. Zaved., Matematika 6 (1975), 73–81, in Russian. (1975) 
  9. Mann, W. R., 10.1090/S0002-9939-1953-0054846-3, Proc. Amer. Math. Soc. 4 (1953), 506–510. (1953) Zbl0050.11603MR0054846DOI10.1090/S0002-9939-1953-0054846-3
  10. Maruster, S., The solution by iteration of nonlinear equations in Hilbert spaces, Proc. Amer. Math. Soc. 63 (1) (1977), 69–73. (1977) Zbl0355.47037MR0636944
  11. Zeidler, E., Nonlinear Functional Analysis and Its Applications, Nonlinear Monotone Operators, vol. II(B), Springer Verlag, Berlin, 1990. (1990) Zbl0684.47029

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