# Residually many BV homeomorphisms map a null set in a set of full measure

created by marchese on 20 Jul 2017

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Preprint

Inserted: 20 jul 2017
Last Updated: 20 jul 2017

Year: 2017

Abstract:

Let $Q$ be the open unit square in $\mathbb{R}^2$. We prove that in a natural complete metric space of $BV$ homeomorphisms $f:Q\rightarrow Q$ with $f_{ \partial Q}=Id$, residually many homeomorphisms (in the sense of Baire categories) map a null set in a set of full measure, and vice versa. Moreover we observe that, for $1\leq p<2$, the family of $W^{1,p}$ homemomorphisms satisfying the above property is of first category.
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