Yiyan Xu — Neckpinchhttps://neckpinch.com/authors/yiyan-xu/New arXiv papers by Yiyan Xu, from Neckpinch Tue, 03 Nov 2026 08:37:45 GMT On some new Ricci flow invariant curvature conditionshttps://neckpinch.com/papers/2412.13633/arxiv:2412.13633Wed, 18 Dec 2024 00:00:00 GMTYiyan Xu — We would like to study new Ricci flow invariant curvature conditions. Specifically, we provide quantitative evidence for an unpublished conjecture of Böhm and Wilking. As an application, we study the topology of manifolds with pinched curvature.Ricci flow