Results 61 to 70 of about 283,922 (217)

Rigidity of Complete Gradient Shrinkers with Pointwise Pinching Riemannian Curvature

Advances in Mathematical Physics, 2021
Let Mn,g,f be a complete gradient shrinking Ricci soliton of dimension n≥3. In this paper, we study the rigidity of Mn,g,f with pointwise pinching curvature and obtain some rigidity results.
Yawei Chu, Dehe Li, Jundong Zhou
doaj   +1 more source

Curvature estimates for the Ricci flow I [PDF]

Calculus of Variations and Partial Differential Equations, 2007
In this paper we present several curvature estimates and convergence results for solutions of the Ricci flow. The curvature estimates depend on smallness of certain local space-time integrals of the norm of the Riemann curvature tensor, while the convergence results require finiteness of space-time integrals of the norm of the Riemann curvature tensor.
openaire   +5 more sources

Ricci Curvature on Birth-Death Processes

Axioms, 2023
In this paper, we study curvature dimension conditions on birth-death processes which correspond to linear graphs, i.e., weighted graphs supported on the infinite line or the half line. We give a combinatorial characterization of Bakry and Émery’s CD(K,n) condition for linear graphs and prove the triviality of edge weights for every linear graph ...
Bobo Hua, Florentin Münch
openaire   +4 more sources

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

Journal 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, Rabaa Hidri, Mohammed Falouti, Salma Nait Mohamed, Mokded Rabhi, Ahmed Hichem Hamzaoui, Issam Nouairi, Nabil Ben Youssef, Cécile Cabassa, Arnould Savouré, Chedly Abdelly, Inès Slama, Walid Zorrig   +12 more
wiley   +1 more source

Stability of China’s Stock Market: Measure and Forecast by Ricci Curvature on Network

Complexity, 2023
The systemic stability of a stock market is one of the core issues in the financial field. The market can be regarded as a complex network whose nodes are stocks connected by edges that signify their correlation strength.
Xinyu Wang, Liang Zhao, Ning Zhang, Liu Feng, Haibo Lin   +4 more
doaj   +1 more source

Purely Coclosed G2‐Structures on Nilmanifolds—II

Mathematische Nachrichten, EarlyView.
ABSTRACT This paper completes the classification of seven‐dimensional nilpotent Lie groups endowed with a left‐invariant purely coclosed G2$\text{G}_2$‐structure, initiated in Bazzoni et al. [Mathematische Nachrichten 296 no. 6 (2023): 2236–2257], the authors provided the classification of decomposable seven‐dimensional nilpotent Lie groups and of the ...
Giovanni Bazzoni, Giorgia Petracci
wiley   +1 more source

Sodium Diclofenac‐Loaded Drug Delivery Microspheres: Impact on Calcium Hydroxide Paste Properties and Biological Response

Australian Endodontic Journal, EarlyView.
ABSTRACT This study evaluated whether the incorporation of sodium diclofenac‐loaded microspheres into a calcium hydroxide paste enhances antibiofilm activity while maintaining physicochemical properties and biocompatibility. Calcium hydroxide paste, calcium hydroxide combined with sodium diclofenac, and calcium hydroxide containing sodium diclofenac ...
João Vitor Oliveira de Amorim, Murilo Priori Alcalde, Leonardo Cabau, Rodrigo Ricci Vivan, Paulo Henrique Weckwerth, Marco Antonio Hungaro Duarte, Guilherme Ferreira da Silva   +6 more
wiley   +1 more source

Optimising the Diagnosis of Sesame Seed Allergy With the Basophil Activation Test

Allergy, EarlyView.
The basophil activation test (using the activation marker CD203c) was the only test able to both exclude and confirm sesame seed allergy with precision. A negative skin prick test to sesame extract or tahini and undetectable IgE to Ses i 1 could not rule out sesame seed allergy.
Ru‐Xin Foong, Irene Bartha, Holly Boyd, Andreina Marques‐Mejias, Suzana Radulovic, Marta Krawiec, Faye Harrison, Malak Eghleilib, Grammatiki Antoneria, Zainab Jama, Matthew Kwok, Vasco Claro, Cristian Ricci, Tom Marrs, Gideon Lack, George Du Toit, Alexandra F. Santos   +16 more
wiley   +1 more source

Forman–Ricci communicability curvature of graphs and networks

European Journal of Applied Mathematics
Geometric parameters in general and curvature in particular play a fundamental role in our understanding of the structure and functioning of real-world networks. Here, the discretisation of the Ricci curvature proposed by Forman is adapted to capture the
Ernesto Estrada
doaj   +1 more source

Continental‐wide prioritization of protected areas to address global and habitat‐specific goals for avian biodiversity conservation

Conservation Biology, EarlyView.
Abstract The United Nations and European Union have set ambitious conservation goals to halt and reverse declines in biodiversity by protecting 30% of land and sea areas by 2030. Effective conservation planning requires evidence‐based spatial prioritization to maximize the coverage of species within designated protected areas.
Yanjie Xu, Diego Pavón‐Jordán, Tyler Hallman, Tristan R. M. Bakx, Lluís Brotons, Sergi Herrando, Alison Johnston, Brett K. Sandercock, Thomas Sattler, Alaaeldin Soultan, Vitalie Ajder, Dawn E. Balmer, Brian Burke, Thiago Cavalcante, Tomasz Chodkiewicz, Ruud P. B. Foppen, Anthony D. Fox, Verena Keller, Tatiana Kornienko, Peter Knaus, Heini Kujala, Åke Lindström, Qenan Maxhuni, Károly Nagy, Ingar Jostein Øien, Tomas Pärt, Dimitrije Radišić, Draženko Z. Rajković, Iván Ramirez, Paul Shimmings, Karel Šťastný, Thomas Vikstrøm, Tomasz Wilk, Aleksi Lehikoinen   +33 more
wiley   +1 more source