## Abstract We give a characterization of those Banach function spaces in which the Davis inequality for martingales is valid. (ยฉ 2008 WILEYโVCH Verlag GmbH & Co. KGaA, Weinheim)
Intersection Formulae and the Marginal Function in Banach Spaces
โ Scribed by A. Jourani
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 681 KB
- Volume
- 192
- Category
- Article
- ISSN
- 0022-247X
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โฆ Synopsis
Intersection formulae are central to the development of subdifferential calculus and the differentiation of marginal functions. In this paper, we reexamine the connection between independence conditions and intersection formulae. Then we apply the formulae to a general parametric mathematical programming problem in which the constraints are defined by multivalued functions. These results allow us to obtain generalized chain rules for composite functions. Corollaries of this work include several well-known intersection formulae and calculus rules. c 1995 Academic Press, Inc.
๐ SIMILAR VOLUMES
## Abstract Let __X__(ฮผ) be a Banach function space. In this paper we introduce two new geometric notions, __q__โconvexity and weak __q__โconvexity associated to a subset __S__ of the unit ball of the dual of __X__(ฮผ), 1 โค __q__ < โ. We prove that in the general case both notions are not equivalent
We extend the classical inverse and implicit function theorems, the implicit function theorems of Lyusternik and Graves, and the results of Clarke and Pourciau to the situation when the given function is not smooth, but it has a convex strict prederivative whose measure of noncompactness is smaller
The paper is devoted to some results on the problem of S. M. Ulam for the stability of functional equations in Banach spaces. The problem was posed by Ulam 60 years ago.