Bull. Austral. Math. Soc. 72(3) pp.491--496, 2005.
Lipschitz functions with maximal Clarke subdifferentials are staunch
Jonathan M. Borwein |
Xianfu Wang |
Research for the first author was supported by NSERC and
the CRC programme.
Research for the second author was supported by NSERC.
Abstract
In a recent paper we have shown that most non-expansive Lipschitz functions (in the sense of Baire's category) have a maximal Clarke subdifferential. In the present paper, we show that in a separable Banach space the set of non-expansive Lipschitz functions with a maximal Clarke subdifferential is not only of generic, but also staunch.
Click to download PDF of this article (free access until July 2006)
or get the no-frills version
[an error occurred while processing this directive](Metadata: XML, RSS, BibTeX) | MathSciNet: MR2199651 | Z'blatt-MATH: 1121.49015 |
References
- J.M. Borwein and X. Wang;
Lipschitz functions with maximal subdifferentials are generic,
Proc. Amer. Math. Soc. 128 (2000), pp. 3221--3229. MR1777577 - J.M. Borwein, W.B. Moors and X. Wang;
Generalized subdifferentials: a Baire categorical approach,
Trans. Amer. Math. Soc. 353 (2001), pp. 3875--3893. MR1837212 - F.H. Clarke;
Optimization and nonsmooth analysis (Wiley Interscience, New York, 1983). MR709590 - J.R. Giles and S. Sciffer;
Locally Lipschitz functions are generically pseudo-regular on separable Banach spaces,
Bull. Austral. Math. Soc. 47 (1993), pp. 205--212. MR1210135 - S. Reich, A.J. Zaslavski;
The set of noncontractive mappings is σ-porous in the space of all non-expansive mappings,
C. R. Acad. Sci. Paris 333 (2001), pp. 539--544. MR1860926 - L. Zajicek;
Small non-σ-porous sets in topologically complete metric spaces,
Colloq. Math. 77 (1998), pp. 293--304. MR1628994
ISSN 0004-9727