Manuscript OpenAI@2026-10-07 · OpenAI.tex · remark · 6a931f8f

Remark: 357-01. Bi-Lipschitz Coordinates at Regular Points of Noncollapsed RCD Spaces

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OpenAI@2026-10-07#rem:oai-p-357-01

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Authors: OpenAI. Family 357.

Title: Bi-Lipschitz Coordinates at Regular Points of Noncollapsed RCD Spaces.

Abstract: We resolve the regular-point bi-Lipschitz conjecture in the noncollapsed setting. For every integer n ≥ 2 and every real K, every regular point of a noncollapsed ${}mathrm{RCD}(K,n)$ space has an open neighborhood bi-Lipschitz homeomorphic to an open subset of ℝn. The bi-Lipschitz constant depends only on n, and the neighborhood uses the restricted ambient distance.

This abstract is a catalogue record. It is not a verification and not a premise. It does not close O.1. O.1 stays NOT_CLOSED. No quantum coefficient is admitted. No compilation is asserted.

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