Results 11 to 20 of about 731 (76)

A note on the almost-Schur lemma on smooth metric measure spaces. [PDF]

open access: yesJ Inequal Appl, 2018
In this paper, we prove almost Schur Lemma on closed smooth metric measure spaces, which implies the results of X.
Chen JT.
europepmc   +2 more sources

Widths of balls and free boundary minimal submanifolds

open access: yesAdvanced Nonlinear Studies, 2023
We observe that the kk-dimensional width of an nn-ball in a space form is given by the area of an equatorial kk-ball. We also discuss the relationship between widths and lower bounds for the area of a free boundary minimal submanifold in a space form ...
Zhu Jonathan J.
doaj   +1 more source

Remarks on Manifolds with Two-Sided Curvature Bounds

open access: yesAnalysis and Geometry in Metric Spaces, 2021
We discuss folklore statements about distance functions in manifolds with two-sided bounded curvature. The topics include regularity, subsets of positive reach and the cut locus.
Kapovitch Vitali, Lytchak Alexander
doaj   +1 more source

5-Point CAT(0) Spaces after Tetsu Toyoda

open access: yesAnalysis and Geometry in Metric Spaces, 2021
We give another proof of Toyoda’s theorem that describes 5-point subspaces in CAT(0) length spaces.
Lebedeva Nina, Petrunin Anton
doaj   +1 more source

Lipschitz Chain Approximation of Metric Integral Currents

open access: yesAnalysis and Geometry in Metric Spaces, 2022
Every integral current in a locally compact metric space X can be approximated by a Lipschitz chain with respect to the normal mass, provided that Lipschitz maps into X can be extended slightly.
Goldhirsch Tommaso
doaj   +1 more source

A New Transport Distance and Its Associated Ricci Curvature of Hypergraphs

open access: yesAnalysis and Geometry in Metric Spaces, 2022
The coarse Ricci curvature of graphs introduced by Ollivier as well as its modification by Lin–Lu– Yau have been studied from various aspects. In this paper, we propose a new transport distance appropriate for hypergraphs and study a generalization of ...
Akamatsu Tomoya
doaj   +1 more source

Extremal subsets in geodesically complete spaces with curvature bounded above

open access: yesAnalysis and Geometry in Metric Spaces, 2023
We introduce the notion of an extremal subset in a geodesically complete space with curvature bounded above, i.e., a GCBA space. This is an analog of an extremal subset in an Alexandrov space with curvature bounded below introduced by Perelman and ...
Fujioka Tadashi
doaj   +1 more source

Sub-Finsler Horofunction Boundaries of the Heisenberg Group

open access: yesAnalysis and Geometry in Metric Spaces, 2021
We give a complete analytic and geometric description of the horofunction boundary for polygonal sub-Finsler metrics, that is, those that arise as asymptotic cones of word metrics, on the Heisenberg group.
Fisher Nate, Golo Sebastiano Nicolussi
doaj   +1 more source

A Zoll counterexample to a geodesic length conjecture [PDF]

open access: yes, 2007
We construct a counterexample to a conjectured inequality ...
Balacheff, Florent   +2 more
core   +6 more sources

A systolic inequality with remainder in the real projective plane

open access: yesOpen Mathematics, 2020
The first paper in systolic geometry was published by Loewner’s student P. M. Pu over half a century ago. Pu proved an inequality relating the systole and the area of an arbitrary metric in the real projective plane.
Katz Mikhail G., Nowik Tahl
doaj   +1 more source

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