Results 81 to 90 of about 412,587 (240)
Introducing quantum Ricci curvature [PDF]
, 2017 Motivated by the search for geometric observables in nonperturbative quantum gravity, we define a notion of coarse-grained Ricci curvature. It is based on a particular way of extracting the local Ricci curvature of a smooth Riemannian manifold by ...
N. Klitgaard, R. Loll
semanticscholar +1 more source
Chronic and acute mediators of passive viscoelasticity in human skeletal muscle fibres
Experimental Physiology, EarlyView.Abstract The cellular viscoelastic modulus in skeletal muscle tissue responds dynamically to chronic stressors, such as age and exercise. Passive tissue mechanics can also be sensitive to acute stimuli, such as mechanical loading and/or activation‐induced muscle fatigue.
Grace E. Privett +3 more
wiley +1 more source
The Journal of Physiology, EarlyView.Abstract figure legend In this study, we use human‐induced pluripotent stem cell‐derived cardiomyocyte (hiPSC‐CM) experiments and computational modelling to identify the mechanism of action of drug compounds. In the hiPSC‐CM experiments, optical measurements of cell collections are recorded in the baseline case and after drug exposure.
Karoline Horgmo Jæger +4 more
wiley +1 more source
Hyperbolic Gradient-Bourgoignon Flow
پژوهشهای ریاضی, 2022 Introduction Ricci solitons as a generalization of Einstein manifolds introduced by Hamilton in mid 1980s. In the last two decades, a lot of researchers have been done on Ricci solitons.
Hamed Faraji +2 more
doaj
Geometric inequalities for manifolds with Ricci curvature in the Kato class [PDF]
, 2016 We obtain an Euclidean volume growth results for complete Riemannian manifolds satisfying a Euclidean Sobolev inequality and a spectral type condition on the Ricci curvature.
G. Carron
semanticscholar +1 more source
η-Ricci Solitons on Kenmotsu 3-Manifolds
Annals of the West University of Timisoara: Mathematics and Computer Science, 2018 In the present paper we study η-Ricci solitons on Kenmotsu 3-manifolds. Moreover, we consider η-Ricci solitons on Kenmotsu 3-manifolds with Codazzi type of Ricci tensor and cyclic parallel Ricci tensor.
De Krishnendu, De Uday Chand
doaj +1 more source
, 2012 A Ricci surface is a Riemannian 2-manifold $(M,g)$ whose Gaussian curvature $K$ satisfies $K\Delta K+g(dK,dK)+4K^3=0$. Every minimal surface isometrically embedded in $\mathbb{R}^3$ is a Ricci surface of non-positive curvature.
Moroianu, Andrei, Moroianu, Sergiu
core +2 more sources
Mixed sectional-Ricci curvature obstructions on tori
, 2017 We establish new obstruction results to the existence of Riemannian metrics on tori satisfying mixed bounds on both their sectional and Ricci curvatures.
Kloeckner, Benoît, Sabourau, Stéphane
core
Curvature‐dimension condition of sub‐Riemannian α$\alpha$‐Grushin half‐spaces
Transactions of the London Mathematical Society, Volume 12, Issue 1, December 2025.Abstract We provide new examples of sub‐Riemannian manifolds with boundary equipped with a smooth measure that satisfy the RCD(K,N)$\mathsf {RCD}(K, N)$ condition. They are constructed by equipping the half‐plane, the hemisphere and the hyperbolic half‐plane with a two‐dimensional almost‐Riemannian structure and a measure that vanishes on their ...
Samuël Borza, Kenshiro Tashiro
wiley +1 more source
Leveraging Earth Observation Data to Monitor Boat‐Based Recreational Fishing
Fish and Fisheries, Volume 26, Issue 6, Page 1065-1074, November 2025.High‐resolution satellite imagery was applied to monitor daily patterns of recreational fishing vessels during a temporary fishing ban within a MPA. The satellite detections revealed fine‐scale spatio‐temporal trends not captured by AIS, including a sharp increase in vessel presence immediately after the ban was lifted and a concentration of activity ...
Javier Menéndez‐Blázquez +2 more
wiley +1 more source