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 …

De Giorgi and Gromov working together

N Gigli - arXiv preprint arXiv:2306.14604, 2023 - arxiv.org
The title is meant as way to honor two great mathematicians that, although never actually
worked together, introduced concepts of convergence that perfectly match each other and …

[HTML][HTML] Local vector measures

C Brena, N Gigli - Journal of Functional Analysis, 2024 - Elsevier
Consider a BV function on a Riemannian manifold. What is its differential? And what about
the Hessian of a convex function? These questions have clear answers in terms of (co) …

(1, p) (1,p)‐Sobolev spaces based on strongly local Dirichlet forms

K Kuwae - Mathematische Nachrichten, 2024 - Wiley Online Library
In the framework of quasi‐regular strongly local Dirichlet form (E, D (E)) (E,D(E)) on L 2 (X;
m) L^2(X;m) admitting minimal EE‐dominant measure μ μ, we construct a natural pp‐energy …

Riesz transforms for Dirichlet spaces tamed by distributional curvature lower bounds

S Esaki, ZJ Xu, K Kuwae - arXiv preprint arXiv:2308.12728, 2023 - arxiv.org
The notion of tamed Dirichlet space was proposed by Erbar, Rigoni, Sturm and Tamanini as
a Dirichlet space having a weak form of Bakry-\'Emery curvature lower bounds in distribution …

The Littlewood-Paley-Stein inequality for Dirichlet space tamed by distributional curvature lower bounds

S Esaki, ZJ Xu, K Kuwae - arXiv preprint arXiv:2307.12514, 2023 - arxiv.org
The notion of tamed Dirichlet space by distributional lower Ricci curvature bounds was
proposed by Erbar, Rigoni, Sturm and Tamanini as the Dirichlet space having a weak form …

Heat flow regularity, Bismut–Elworthy–Li's derivative formula, and pathwise couplings on Riemannian manifolds with Kato bounded Ricci curvature

M Braun, B Güneysu - Electronic Journal of Probability, 2021 - projecteuclid.org
We prove that if the Ricci tensor Ric of a geodesically complete Riemannian manifold M,
endowed with the Riemannian distance ρ and the Riemannian measure m, is bounded from …

Boundedness of Riesz transforms on $\RCD (K,\infty) $ spaces

A Carbonaro, L Tamanini, D Trevisan - arXiv preprint arXiv:2308.16294, 2023 - arxiv.org
For $1< p<\infty $, we prove the $ L^ p $-boundedness of the Riesz transform operators on
metric measure spaces with Riemannian Ricci curvature bounded from below, without any …

Vector calculus for tamed Dirichlet spaces

M Braun - 2024 - ams.org
In the language of $ L^\infty $-modules proposed by Gigli, we introduce a first order calculus
on a topological Lusin measure space $(M,\mathfrak {m}) $ carrying a quasi-regular …

Heat flow on 1-forms under lower Ricci bounds. Functional inequalities, spectral theory, and heat kernel

M Braun - Journal of Functional Analysis, 2022 - Elsevier
We study the canonical heat flow (H t) t≥ 0 on the cotangent module L 2 (T⁎ M) over an
RCD (K,∞) space (M, d, m), K∈ R. We show Hess–Schrader–Uhlenbrock's inequality and, if …