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Strong pseudo-contractions perturbed by compact operators in Banach spaces

Author(s): Claudio H. Morales
Journal: Proc. Amer. Math. Soc. 133 (2005), 3613-3618.
MSC (2000): Primary 47H10
Posted: June 7, 2005
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Abstract: Let $X$ be a (real) Banach space, let $D$ be an open subset of $X$, and let $\mathcal{B}(X)$ denote the collection of all nonempty bounded and closed subsets of $X$. Suppose $T$ is continuous from $\overline{D}$ into $\mathcal{B}(X)$ with respect to the Hausdorff metric and strongly pseudo-contractive, while $g$ is compact from $\overline{D}$ into $X$. Then $T+g$ has a fixed point if it satisfies the classical Leray-Schauder condition on the boundary of $D$.


References:

1.
F. E. Browder, Nonlinear operators and nonlinear equations of evolution in Banach spaces, Proc. Symp. Pure Math. 18 AMS (1976). MR 0405188 (53:8982)

2.
J. A. Gatica and W. A. Kirk, A fixed point theorem for k-set-contractions defined in a cone, Pacific J. Math. 53 (1974), 131-136. MR 0353071 (50:5557)

3.
N. Hirano, Some surjectivity theorems for compact perturbations of accretive operators, Nonlinear Analysis 8 (1984), 765-774. MR 0750049 (86a:47054)

4.
A. G. Kartsatos, Mapping theorems involving compact perturbations and compact resolvents of nonlinear operators in Banach spaces, J. Math. Anal. Appl. 80 (1981), 130-146. MR 0614247 (82e:47085)

5.
A. G. Kartsatos, On compact perturbations and compact resolvents of nonlinear m-accretive operators in Banach spaces, Proc. Amer. Math. Soc. 119 (1993), 1189-1199. MR 1216817 (94c:47076)

6.
A. G. Kartsatos, Recent results involving compact perturbations and compact resolvents of accretive operators in Banach spaces, World Congress in Nonlinear Analysts 1992, Vol. I-IV (Tampa, FL, 1992), 2197-2222, de Gruyter, Berlin, 1996. MR 1389246

7.
W. A. Kirk, A remark on condensing mappings, J. Math. Anal. Appl. 51 (1975), 629-632. MR 0380526 (52:1426)

8.
W. A. Kirk, Local expansions and accretive mappings, Internat. J. Math. & Math. Sci. 6 (1983), 419-429. MR 0712561 (85b:47061)

9.
W. A. Kirk and C. H. Morales, Fixed point theorems for local strong pseudo-contractions, Nonlinear Anal. Theory Methods Appl. 4 (1980), 363-368. MR 0563815 (81a:47056)

10.
C. H. Morales, Pseudo-contractive mappings and the Leray-Schauder boundary condition, Comment. Univ. Carolinae 20 (1979), 745-756. MR 0555187 (80k:47067)

11.
C. H. Morales, Existence theorems for strongly accretive operators in Banach spaces, SIMAA 4 (2002) Taylor & Francis, 361-368. MR 1938855 (2003k:47081)

12.
S. B. Nadler, Jr., Multi-valued contraction mappings, Pacific J. Math. 30 (1969), 475-488. MR 0254828 (40:8035)

13.
Roger D. Nussbaum, The fixed point index for local condensing maps, Ann. Mat. Pura Appl. 89 (1971), 217-258. MR 0312341 (47:903)

14.
D. O'Regan, Fixed point theory for compact perturbations of pseudocontractive maps, Archivum Mathematicum 34 (1998), 401-415. MR 1662064 (99j:47092)

15.
W. V. Petryshyn and P. M. Fitzpatrick, Fixed point theorems for multivalued noncompact inward maps, J. Math. Anal. Appl. 46 (1974), 456-767. MR 0361787 (50:14232)

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Additional Information:

Claudio H. Morales
Affiliation: Department of Mathematics, University of Alabama in Huntsville, Huntsville, Alabama 35899
Email: morales@math.uah.edu

DOI: 10.1090/S0002-9939-05-07942-6
PII: S 0002-9939(05)07942-6
Keywords: Strongly pseudo-contractive, pseudo-contractive, compact operators
Received by editor(s): December 3, 2003
Received by editor(s) in revised form: August 10, 2004
Posted: June 7, 2005
Communicated by: Joseph A. Ball
Copyright of article: Copyright 2005, American Mathematical Society


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