A quantitative version of the Besicovitch projection theorem via multiscale analysis
A quantitative version of the Besicovitch projection theorem via multiscale analysis
复制标题
通过多尺度分析的贝西科维奇投影定理的定量版本
DOI:
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发表时间:
2007
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通讯作者:
T. Tao
中科院分区:
文献类型:
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作者:
T. Tao
By using a multiscale analysis, we establish quantitative versions of the Besicovitch projection theorem (almost every projection of a purely unrectifiable set in the plane of finite length has measure zero) and a standard companion result, namely that any planar set with at least two projections of measure zero is purely unrectifiable. We illustrate these results by providing an explicit (but weak) upper bound on the average projection of the nth generation of a product Cantor set.