POROSITY, DIFFERENTIABILITY AND PANSU’S THEOREM
POROSITY, DIFFERENTIABILITY AND PANSU’S THEOREM
复制标题
孔隙率、可微性和 PANSU 定理
DOI:
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
Theorem
中科院分区:
文献类型:
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作者:
PANSU’S;Theorem
We use porosity to study differentiability of Lipschitz maps on Carnot groups. Our first result states that directional derivatives of a Lipschitz function act linearly outside a σ-porous set. The second result states that irregular points of a Lipschitz function form a σ-porous set. We use these observations to give a new proof of Pansu’s theorem for Lipschitz maps from a general Carnot group to a Euclidean space.