On the relationship between differentiability conditions and existence of a strong gradient (Q2387828)
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| Language | Label | Description | Also known as |
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| English | On the relationship between differentiability conditions and existence of a strong gradient |
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On the relationship between differentiability conditions and existence of a strong gradient (English)
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5 September 2005
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This paper gives a negative answer to the question: Is differentiability almost equivalent to the existence of a strong gradient? Let us recall that the notion of a strong gradient was introduced by \textit{O. Dzagnidze} [in: Collected papers in function theory. Proc. A. Razmadze Math. Inst. 106, 7--48 (1993; Zbl 0836.26007)].
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continuous function
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Lagrange's formula
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almost-equivalence of conditions
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