Results 1 to 10 of about 174,413 (165)

Order-unit-metric spaces [PDF]

open access: yesPositivity, 2013
We study the concept of cone metric space in the context of ordered vector spaces by setting up a general and natural framework for it.
Çağlar, Mert, Ercan, Zafer
exaly   +4 more sources

On the H.-Q. Li inequality on step-two Carnot groups

open access: yesComptes Rendus. Mathématique, 2023
In this note we show that the gradient estimate of the heat semigroup, or more precisely the H.-Q. Li inequality, is preserved under tensorization, some suitable group epimorphism, and central sum. We also establish the Riemannian counterpart of the H.-Q.
Zhang, Ye
doaj   +1 more source

Fault-tolerance in metric dimension of boron nanotubes lattices

open access: yesFrontiers in Computational Neuroscience, 2023
The concept of resolving set and metric basis has been very successful because of multi-purpose applications both in computer and mathematical sciences.
Zafar Hussain, Muhammad Mobeen Munir
doaj   +1 more source

Critical Metrics and Curvature of Metrics with Unit Volume or Unit Area of the Boundary

open access: yesThe Journal of Geometric Analysis, 2022
32 pages. Comments are welcome! (added references, corrected typos)
Tiarlos Cruz, Almir Silva Santos
openaire   +3 more sources

Asymptotically Mean Value Harmonic Functions in Doubling Metric Measure Spaces

open access: yesAnalysis and Geometry in Metric Spaces, 2022
We consider functions with an asymptotic mean value property, known to characterize harmonicity in Riemannian manifolds and in doubling metric measure spaces.
Adamowicz Tomasz   +2 more
doaj   +1 more source

Hilbert Metric in the Unit Ball

open access: yesStudia Scientiarum Mathematicarum Hungarica, 2023
The Hilbert metric between two points 𝑥, 𝑦 in a bounded convex domain 𝐺 is defined as the logarithm of the cross-ratio 𝑥, 𝑦 and the intersection points of the Euclidean line passing through the points 𝑥, 𝑦 and the boundary of the domain. Here, we study this metric in the case of the unit ball 𝔹𝑛.
Oona Rainio, Matti Vuorinen
openaire   +2 more sources

Spheres and Tori as Elliptic Linear Weingarten Surfaces

open access: yesMathematics, 2022
The linear Weingarten condition with ellipticity for the mean curvature and the extrinsic Gaussian curvature on a surface in the three-sphere can define a Riemannian metric which is called the elliptic linear Weingarten metric.
Dong-Soo Kim, Young Ho Kim, Jinhua Qian
doaj   +1 more source

A novel approach to correcting attribution of Clostridioides difficile in a healthcare setting

open access: yesAntimicrobial Stewardship & Healthcare Epidemiology, 2023
Objective: To describe a novel attribution metric estimating the causal source location of healthcare-associated Clostridioides difficile and compare it with the current US National Healthcare Safety Network (NHSN) surveillance reporting standard ...
Hunter Doyle   +6 more
doaj   +1 more source

On sets with unit Hausdorff density in homogeneous groups

open access: yesForum of Mathematics, Sigma, 2023
It is a longstanding conjecture that given a subset E of a metric space, if E has unit $\mathscr {H}^{\alpha }\llcorner E$ -density almost everywhere, then E is an $\alpha $ -rectifiable set. We prove this conjecture under the assumption that
Antoine Julia, Andrea Merlo
doaj   +1 more source

Estimating Production Metric for Ship Assembly Based on Geometric and Production Information of Ship Block Model

open access: yesJournal of Marine Science and Engineering, 2021
To secure technological competitiveness in shipbuilding and offshore industries, the continuous application and development of various technologies is essential.
Won-Seok Choi   +4 more
doaj   +1 more source

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