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Transactions of the American Mathematical Society
Transactions of the American Mathematical Society
ISSN 1088-6850(online) ISSN 0002-9947(print)

 

Nonsmooth analysis: differential calculus of nondifferentiable mappings


Author: A. D. Ioffe
Journal: Trans. Amer. Math. Soc. 266 (1981), 1-56
MSC: Primary 58C20; Secondary 26E15, 46G05, 49A51
MathSciNet review: 613784
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Abstract: A new approach to local analysis of nonsmooth mappings from one Banach space into another is suggested. The approach is essentially based on the use of set-valued mappings of a special kind, called fans, for local approximation. Convex sets of linear operators provide an example of fans. Generally, fans can be considered a natural set-valued extension of linear operators. The first part of the paper presents a study of fans; the second is devoted to calculus and includes extensions of the main theorems of classical calculus.


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Additional Information

DOI: http://dx.doi.org/10.1090/S0002-9947-1981-0613784-7
PII: S 0002-9947(1981)0613784-7
Article copyright: © Copyright 1981 American Mathematical Society