Weak Larson conjectures on measurable subsets of supports

Let ψ\psi be a dyadic orthonormal wavelet, let f:RRf:\mathbb{R}\to\mathbb{R} tile obreakR obreak\mathbb{R} by translations and dilations, and let μ\mu denote Lebesgue measure. Define a measure ν\nu on Lebesgue-measurable sets by

ν(E)=E1xdμ(x).\nu(E)=\int_E\frac{1}{|x|}\,d\mu(x).

A weak Larson conjecture consists of the following two assertions: (1) the support of ψ\psi contains a measurable set VV with μ(V)=1\mu(V)=1 and ν(V)=log4\nu(V)=\log 4; and (2) the support of ff contains a measurable set VV with μ(V)=1\mu(V)=1 and ν(V)=log4\nu(V)=\log 4.

The source presents these assertions as consequences of Larson's conjecture and notes that a wavelet set has the stated measure values. Their resolution is not specified.

Sources & referencesView supporting material

Primary source

Marcin Bownik, Ziemowit Rzeszotnik and Darrin Speegle, “Are MSF wavelets minimally supported?”, arXiv:2507.09818 (2025).

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