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Results tagged with hausdorff-measure
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user 528467
Questions about Hausdorff measures, their variants (such as spherical Hausdorff measures) and generalisations.
12
votes
2
answers
790
views
Sets that project to zero measure on all lines except one
It is a (difficult) exercise to show that there exists a measurable set $E \subset [0,1]^2$ (necessarily with zero 2-dimensional Lebesgue measure) such that the projection on every line passing throug …
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