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Dimension Distortion by Sobolev Mappings in Foliated Metric Spaces

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Balogh Z. M., Tyson J. T., Wildrick K.

Analysis and Geometry in Metric Spaces

2013

tom 1

232-254

We quantify the extent to which a supercritical Sobolev mapping can increase the dimension of subsets of its domain, in the setting of metric measure spaces supporting a Poincaré inequality. We show that the set of mappings that distort the dimensions of sets by the maximum possible amount is a prevalent subset of the relevant function space. For foliations of a metric space X defined by a David–Semmes regular mapping Π : X → W, we quantitatively estimate, in terms of Hausdorff dimension in W, the size of the set of leaves of the foliation that are mapped onto sets of higher dimension. We discuss key examples of such foliations, including foliations of the Heisenberg group by left and right cosets of horizontal subgroups.

Ograniczanie wyników

1 Analysis and Geometry in Metric Spaces

1 Balogh Z. M.

1 Tyson J. T.

1 Wildrick K.

1 2013

Wyniki wyszukiwania

Dimension Distortion by Sobolev Mappings in Foliated Metric Spaces