Lipschitz嵌入在平面上的最优扩张
Optimal extension of Lipschitz embeddings in the plane
摘要:
证明了单位圆在平面上的每一个双Lipschitz嵌入都可以推广到单位圆盘上的一个双Lipschitz映射,且所涉及的常数都有线性界.这回答了Daneri和Pratelli提出的一个问题。此外,每一个Lipschitz嵌入的循环延伸到Lipschitz同胚的平面,再次与一个线性界的常数。
英文摘要:
We prove that every bi-Lipschitz embedding of the unit circle into the plane can be extended to a bi-Lipschitz map of the unit disk with linear bounds on the constants involved. This answers a question raised by Daneri and Pratelli. Furthermore, every Lipschitz embedding of the circle extends to a Lipschitz homeomorphism of the plane, again with a linear bound on the constant.
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