activity
19982026
most citedNull distance on a spacetime

43 citations · 158 across the 41 of their papers we have counts for

collaborators

50 papers

math.DG2026

Geometric Stability of the Schoen-Yau Zero Mass Theorem

Christina Sormani

In 1979, Schoen and Yau proved their famous Positive Mass Theorem which is a combination of a comparison theorem: {\em a three dimensional asymptotically flat Riemannian manifold w…

math.MG2025

Gromov's Compactness Theorem for the Intrinsic Timed-Hausdorff Distance

Mauricio Che, Raquel Perales, Christina Sormani

The intrinsic timed-Hausdorff distance between timed-metric spaces, first introduced by Sakovich--Sormani, yields a weak notion of convergence for space-times. In this paper we pro…

math.DG2025

Existence of uniform Temple charts and applications to null distance

Benjamin Meco, Anna Sakovich, Christina Sormani

In this paper, we prove that Temple's cylindrical future null coordinate charts can be constructed uniformly and we estimate the gradients of their optical functions. We then apply…

math.MG2025

Geometric Convergence to an Extreme Limit Space with nonnegative scalar curvature

Christina Sormani, Wenchuan Tian, Wai-Ho Yeung

In 2014, Gromov conjectured that sequences of manifolds with nonnegative scalar curvature should have subsequences which converge in some geometric sense to limit spaces with some…

math.DG2024

Introducing Various Notions of Distances between Space-Times

Anna Sakovich, Christina Sormani

We introduce the notion of causally-null-compactifiable space-times which can be canonically converted into a compact timed-metric-spaces using the cosmological time of Andersson-H…

math.MG2024

Monotone Sequences of Metric Spaces with Compact Limits

R. Perales, C. Sormani

In this paper, we consider a fixed metric space (possibly an oriented Riemannian manifold with boundary) with an increasing sequence of distance functions and a uniform upper bound…