Differentiability of functions in the Zygmund class

Published 16 Dec 2010 in math.CA | (1012.3545v1)

Abstract: We prove that the Hausdorff dimension of the set of points where a function in the Zygmund class in the euclidean space has bounded divided differences, is bigger or equal to 1. A similar result for functions in the Small Zygmund class is also proved and an example is constructed to show that these results are sharp.

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