Abstract
We introduce the notion of finitely dentable map, which extends some properties of the uniform convexifying operators of Beauzamy to a non linear frame and provides a characterization of the functions that can be approximated by differences of convex Lipschitz functions.
References
- B. Beauzamy: Opérateurs uniformément convexifiants, Stud. Math. 57(2) (1976) 103–139.https://doi.org/10.4064/sm-57-2-103-139Google Scholar
- Y. Benyamini, J. Lindenstrauss: Geometric Nonlinear Functional Analysis. Vol. 1, Colloquium Publications 48, AMS, Providence (2000).https://doi.org/10.1090/coll/048Google Scholar
- M. Cepedello-Boiso: Approximation of Lipschitz functions by ∆-convex functions in Banach spaces, Israel J. Math. 106 (1998) 269–284.https://doi.org/10.1007/BF02773472Google Scholar
- R. Deville, G. Godefroy, V. Zizler: Smoothness and Renorming in Banach Spaces, Pitman Monog. and Surveys 64, Longman, Harlow (1993).Google Scholar
- J. Duda, L. Veselý, L. Zajíček: On d.c. functions and mappings, Atti Semin. Mat. Fis. Univ. Modena 51(1) (2003) 111–138.Google Scholar
- M. Fabian, G. Godefroy, V. Zizler: The structure of uniformly Gateaux smooth Banach spaces, Israel J. Math. 124 (2001) 243–252.https://doi.org/10.1007/BF02772620Google Scholar
- M. Fabian, P. Habala, P. Hájek, V. Montesinos, J. Pelant, V. Zizler: Functional Analysis and Infinite-Dimensional Geometry, CMS Books in Mathematics / Ouvrages de Mathématiques de la SMC 8, Springer, New York (2001).https://doi.org/10.1007/978-1-4757-3480-5Google Scholar
- G. Godefroy: Renormings of Banach spaces, in: Handbook of the Geometry of Banach Spaces, Vol. I, W. B. Johnson et al. (ed.), North-Holland, Amsterdam (2001) 781–835.https://doi.org/10.1016/S1874-5849(01)80020-6Google Scholar
- R. Haydon, E. Odell, H. Rosenthal: On certain classes of Baire-1 functions with applications to Banach space theory, in: Functional Analysis (Austin, 1987-1989), E. E. Odell jr. et al. (ed.), Lecture Notes in Math. 1470, Springer, Berlin (1991) 1–35.https://doi.org/10.1007/BFb0090209Google Scholar
- G. Lancien: On uniformly convex and uniformly Kadec-Klee renormings, Serdica Math. J. 21(1) (1995) 1–18.Google Scholar
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Published by Heldermann Verlag, 2008. Rights now held by Banach Press LLC.
