Metric measure spaces and synthetic Ricci bounds: fundamental concepts and recent developments

KT Sturm - European Congress of Mathematics, 2023 - ems.press
Metric measure spaces with synthetic Ricci bounds have attracted great interest in recent
years, accompanied by spectacular breakthroughs and deep new insights. In this survey, I …

Failure of curvature-dimension conditions on sub-Riemannian manifolds via tangent isometries

L Rizzi, G Stefani - Journal of Functional Analysis, 2023 - Elsevier
We prove that, on any sub-Riemannian manifold endowed with a positive smooth measure,
the Bakry–Émery inequality for the corresponding sub-Laplacian, 1 2 Δ (‖∇ u‖ 2)≥ g (∇ …

Inscribed radius bounds for lower Ricci bounded metric measure spaces with mean convex boundary

A Burtscher, C Ketterer, RJ McCann… - … Integrability and Geometry …, 2020 - emis.de
Consider an essentially nonbranching metric measure space with the measure contraction
property of Ohta and Sturm, or with a Ricci curvature lower bound in the sense of Lott, Sturm …

Glued spaces and lower curvature bounds

C Ketterer - arxiv preprint arxiv:2408.13137, 2024 - arxiv.org
In this short note we survey theorems and provide conjectures on gluing constructions under
lower curvature bounds in smooth and non-smooth context. Focusing on synthetic lower …

[PDF][PDF] Convex compact surfaces with no bound on their synthetic Ricci curvature

C Vernicos - 2022 - hal.science
Convex compact surfaces with no bound on their synthetic Ricci curvature Page 1 HAL Id:
hal-01922868 https://hal.science/hal-01922868v1 Preprint submitted on 14 Nov 2018 (v1), last …