Multifractal analysis of the Brjuno function
classification
🧮 math.NT
math.DS
keywords
functionbrjunomultifractalaccordinganalysiscalderdefinitiondetermine
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We determine the $1$-exponent (according to the Calder\'on-Zygmund definition) of the Brjuno function $B$ everywhere, thus showing that it is a new example of multifractal function. We also discuss various notions of pointwise regularity of the function $B$.
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