Doubly metric higher-dimensional Hausdorff-measure conjecture

Let m,d1m,d\geq1, let Ψ:Zm(0,)\Psi:\mathbb Z^m\to(0,\infty) be arbitrary, and let ff be a dimension function such that the source's series

qZmqmdΨmd+1(q)f(Ψ(q)q)\sum_{\mathbf q\in\mathbb Z^m}|\mathbf q|^{md}\Psi^{-md+1}(\mathbf q)f\left(\frac{\Psi(\mathbf q)}{|\mathbf q|}\right)

diverges and xxmd+1f(x)x\mapsto x^{-md+1}f(x) is monotonically increasing. Define F(x)=xmdf(x)F(x)=x^{md}f(x) and let \WWΨmd\WW^{md}_{\Psi} be the set of (\bftheta,X)(\bftheta,X) with X\WWΨ,\bfthetamdX\in\WW^{md}_{\Psi,\bftheta}. Doubly metric higher-dimensional Hausdorff-measure conjecture. Then

\HHF(\WWΨmd\I2md)=.\HH^F(\WW^{md}_{\Psi}\cap\I^{2md})=\infty.

This conjecture asserts that the monotonicity condition on Ψ\Psi can be removed in the doubly metric setting. It is stated as an open problem following the singly metric complementary conjecture.

Sources & referencesView supporting material

Primary source

Mumtaz Hussain and David Simmons, “The Hausdorff measure version of Gallagher's theorem – closing the gap and beyond”, arXiv:1612.00139 (2017).

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