Abstract
In a recent paper, Izmailov (Math Program Ser A 147:581–590, 2014) derived an extension of Robinson’s implicit function theorem for nonsmooth generalized equations in finite dimensions, which reduces to Clarke’s inverse function theorem when the generalized equation is just an equation. Páles (J Math Anal Appl 209:202–220, 1997) gave earlier a generalization of Clarke’s inverse function theorem to Banach spaces by employing Ioffe’s strict pre-derivative. In this paper we generalize both theorems of Izmailov and Páles to nonsmooth generalized equations in Banach spaces.
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Notes
Shortly before this paper was accepted for publication we received a letter by A. Izmailov where he confirmed that indeed his proof is not complete and could be fixed by using some of the arguments in our proof. He also noted that his proof heavily relies on the finite dimensions.
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A. L. Dontchev: Supported by the National Science Foundation Grant DMS 1008341.
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Cibulka, R., Dontchev, A.L. A nonsmooth Robinson’s inverse function theorem in Banach spaces. Math. Program. 156, 257–270 (2016). https://doi.org/10.1007/s10107-015-0877-2
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DOI: https://doi.org/10.1007/s10107-015-0877-2
Keywords
- Robinson’s inverse function theorem
- Clarke’s inverse function theorem
- Strict pre-derivative
- Generalized equation
- Strong metric regularity