BiLipschitz Decomposition of Lipschitz Maps between Carnot Groups
BiLipschitz Decomposition of Lipschitz Maps between Carnot Groups
复制标题
卡诺群之间 Lipschitz 映射的 BiLipschitz 分解
DOI:
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发表时间:
2015
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通讯作者:
Sean Li
中科院分区:
文献类型:
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作者:
Sean Li
Abstract Let f : G → H be a Lipschitz map between two Carnot groups. We show that if B is a ball of G, then there exists a subset Z ⊂ B, whose image in H under f has small Hausdorff content, such that B can be decomposed into a controlled number of pieces, the restriction of f on each of which is quantitatively biLipschitz. This extends a result of [14], which proved the same result, but with the restriction that G has an appropriate discretization. We provide an example of a Carnot group not admitting such a discretization.