Abstract
On a normed linear space with uniformly Gâteaux differentiable norm a locally Lipschitz function which satisfies a property relating the Dini derivatives to a constant determined by the Michel-Penot derivative possesses significant differentiability properties. This generalises previous joint work with Simon Fitzpatrick
References
- E. Asplund: Chebyshev sets in Hilbert space, Trans. Amer. Math. Soc. 144 (1969) 235–240.https://doi.org/10.1090/S0002-9947-1969-0253023-7Google Scholar
- A. L. Brown: A rotund reflexive space having a subspace of codimension two with discontinuous metric projection, Mich. Math. J. 21 (1974) 145–151.https://doi.org/10.1307/mmj/1029001259Google Scholar
- J. M. Borwein, S. P. Fitzpatrick, J. R. Giles: The differentiability of real functions on normed linear space using generalized subgradients, J. Math. Anal. Appl. 128 (1987) 412–534.https://doi.org/10.1016/0022-247X(87)90203-4Google Scholar
- R. Deville, G. Godefroy, V. Zizler: Smoothness and Renormings in Banach Spaces, Longmans Pitman Monographs 64, Longman Scientific & Technical, Harlow (1993).Google Scholar
- S. Fitzpatrick: Metric projections and the differentiability of distance functions, Bull. Aust. Math. Soc. 22 (1980) 291–312.https://doi.org/10.1017/S0004972700006596Google Scholar
- S. Fitzpatrick: Differentiation of real-valued functions and continuity of metric projections, Proc. Amer. Math. Soc. 91 (1984) 544–548.https://doi.org/10.1090/S0002-9939-1984-0746087-9Google Scholar
- J. R. Giles, S. Sciffer: Locally Lipschitz functions are generically pseudo-regular on separable Banach spaces, Bull. Aust. Math. Soc. 47 (1993) 205–212.https://doi.org/10.1017/S0004972700012430Google Scholar
- P. Michel, J.-P. Penot: Calcul sous-différentiel pour les fonctions Lipschitziennes et non Lipschitziennes, C. R. Acad. Sci., Paris, Sér. I 298 (1984) 269–272.Google Scholar
- D. Preiss: Differentiability of Lipschitz functions on Banach spaces, J. Funct. Anal. 91 (1990) 312–345.https://doi.org/10.1016/0022-1236(90)90147-DGoogle Scholar
- D. Preiss, L. Zajiček: Directional derivatives of Lipschitz functions, Isr. J. Math. 125 (2001) 1–27.https://doi.org/10.1007/BF02773371Google Scholar
- L. P. Vlasov: On Chebyshev sets, Sov. Math. Dokl. 8 (1967) 401–404.Google Scholar
- L. P. Vlasov: Almost convex and Chebyshev sets, Math. Notes 8 (1970) 776–779.https://doi.org/10.1007/BF01146931Google Scholar
- L. Zajíček: Differentiability of the distance function and points of multivaluedness of the metric projection in Banach space, Czech. Math. J. 33 (1983) 292–308.https://doi.org/10.21136/CMJ.1983.101878Google Scholar
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Published by Heldermann Verlag, 2006. Rights now held by Banach Press LLC.
