Quasiconformal mappings and sets of finite perimeter
Quasiconformal mappings and sets of finite perimeter
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拟共形映射和有限周长集
DOI:
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发表时间:
1973
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通讯作者:
J. Kelly
中科院分区:
文献类型:
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作者:
J. Kelly
Let D be a domain in Rn, n > 2, f a quasiconformal mapping on D. We give a definition of bounding surface of codimension one lying in D, and show that, given a system 2; of such surfaces, the image of the restriction of f to "almost every" surface is again a surface. Moreover, on these surfaces, f takes Hn-1 (Hausdorff (n I)-dimensional) null sets to H 1n null sets. "Almost every" surface is given a precise meaning via the concept of the module of a system of measures, a generalization of the concept of extremal length.