Nonlinear equations involving m-accretive operators |
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Authors: | Claudio Morales |
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Institution: | Department of Mathematics, Pan American University, Edinburg, Texas 78539 U.S.A. |
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Abstract: | Let X be a Banach space and T an m-accretive operator defined on a subset D(T) of X and taking values in 2x. For the class of spaces whose bounded closed and convex subsets have the fixed point property for nonexpansive self-mappings, it is shown here that two boundary conditions which imply existence of zeroes for T, appear to be equivalent. This fact is then used to prove that if there exists x0?D(T) and a bounded open neighborhood U of x0, such that for all x??U ∩ D(T), then the open ball B(0; r) is contained in the range of T. |
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