Results 61 to 70 of about 3,177,995 (232)

Regularity of the Kähler–Ricci flow [PDF]

open access: yesComptes Rendus. Mathématique, 2013
In this short note, we announce a regularity theorem for the Kähler–Ricci flow on a compact Fano manifold (Kähler manifold with positive first Chern class) and its application to the limiting behavior of the Kähler–Ricci flow on Fano 3-manifolds. Moreover, we also present a partial
Tian, Gang, Zhang, Zhenlei
openaire   +1 more source

Structural properties of the sets of positively curved Riemannian metrics on generalized Wallach spaces

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы
In the present paper sets related to invariant Riemannian metrics of positive sectional and (or) Ricci curvature on generalized Wallach spaces are considered.
N.A. Abiev
doaj   +1 more source

Drivers of Sustainability Disclosure in the Healthcare Sector: Empirical Evidence From Portugal

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT This study examines the determinants of online sustainability disclosure in the Portuguese public hospital sector, contributing to the growing literature on sustainability disclosure in healthcare organizations from a context that remains largely underexplored.
Yolanda Ramírez, Francisco Montero
wiley   +1 more source

Ricci Flow and Volume Renormalizability [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2019
With respect to any special boundary defining function, a conformally compact asymptotically hyperbolic metric has an asymptotic expansion near its conformal infinity. If this expansion is even to a certain order and satisfies one extra condition, then it is possible to define its renormalized volume and show that it is independent of choices that ...
Bahuaud, E., Mazzeo, R., Woolgar, E.
openaire   +3 more sources

Stability of piecewise flat Ricci flow in three dimensions

open access: yesJournal of Numerical Analysis and Approximation Theory
For a recently developed piecewise flat approximation of the Ricci flow, numerical instabilities are seen to arise for a particularly useful class of mesh-types.
Rory Conboye
doaj   +1 more source

Propagation of symmetries for Ricci shrinkers

open access: yesAdvanced Nonlinear Studies, 2023
We will show that if a gradient shrinking Ricci soliton has an approximate symmetry on one scale, this symmetry propagates to larger scales. This is an example of the shrinker principle which roughly states that information radiates outwards for ...
Colding Tobias Holck   +1 more
doaj   +1 more source

Predicting levetiracetam neuropsychiatric adverse effects using graph‐theoretical electroencephalographic network metrics in drug‐naive focal epilepsy: A multicenter longitudinal study

open access: yesEpilepsia, EarlyView.
Abstract Objective Levetiracetam (LEV) is an antiseizure medication approved for focal and generalized epilepsy. Despite its efficacy, neuropsychiatric adverse effects (NP‐AEs) may lead to treatment discontinuation. Quantitative electroencephalographic (qEEG) graph‐theoretical analysis has emerged as a valuable tool for identifying neurophysiological ...
Marco Sferruzzi   +10 more
wiley   +1 more source

Topological Signals of Singularities in Ricci Flow

open access: yesAxioms, 2017
We implement methods from computational homology to obtain a topological signal of singularity formation in a selection of geometries evolved numerically by Ricci flow.
Paul M. Alsing   +6 more
doaj   +1 more source

Silicon differentially protects PSII and PSI photochemistry and preserves fatty acid metabolism in salt‐stressed Sorghum bicolor (L.)

open access: yesJournal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Silicon (Si) has been demonstrated to be an important element to enhance crop tolerance against salinity. Nevertheless, mechanisms underlying Si's mitigation of salt stress remains insufficiently explored and understood. This study aims to provide new insights into Si's impact on salt‐stressed Sorghum bicolor (L.) supplied or not ...
Farah Bounaouara   +12 more
wiley   +1 more source

The Ricci flow for nilmanifolds

open access: yesJournal of Modern Dynamics, 2010
We consider the Ricci flow for simply connected nilmanifolds, which translates to a Ricci flow on the space of nilpotent metric Lie algebras. We consider the evolution of the inner product and the evolution of structure constants, as well as the evolution of these quantities modulo rescaling.
openaire   +2 more sources

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