Results 61 to 70 of about 9,543 (234)

Analysis of Ricci flow on noncompact manifolds [PDF]

, 2013
textIn this dissertation, we present some analysis of Ricci flow on complete noncompact manifolds. The first half of the dissertation concerns the formation of Type-II singularity in Ricci flow on [mathematical equation]. For each [mathematical equation]
Wu, Haotian, active 2013
core  

A spinorial energy functional: Critical points and gradient flow

, 2012
On the universal bundle of unit spinors we study a natural energy functional whose critical points, if dimM C 3, are precisely the pairs (g,φ) consisting of a Ricci-flat Riemannian metric g together with a parallel g-spinor φ.
Hartmut Weiss, Ammann, Bernd, Bernd Ammann, Weiss, Hartmut, Frederik Witt, Witt, Frederik   +5 more
core   +1 more source

Management of ring chromosome 20 syndrome: Narrative review and consensus recommendations

Epilepsia, EarlyView.
Abstract Ring chromosome 20 (ring 20) is a rare genetic condition usually presenting as developmental and epileptic encephalopathy. The disease is caused by fusion of the long and short arms of chromosome 20. Patients are symptomatic even if there is no loss of genetic material.
Asma Khamis, Emilia Ricci, Maria Paola Canevini, Lieven Lagae, Kentaro Tokumoto, Yushi Inoue, Tim Buckinx, Allison Watson, Kenneth A. Myers   +8 more
wiley   +1 more source

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

Қарағанды 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

Synthesis and Characterization of Juglone‐Derived cu (II), Mn (II) and Zn (II) Complexes and Investigation of Their Cytotoxic Activities Against Lung and Colon Cancer Cells in Vitro and in Silico

Journal of Applied Toxicology, EarlyView.
ABSTRACT Three new Zn (II), Cu (II) and Mn (II) complexes have been synthesized from 5‐hydroxy‐1,4‐naphthoquinone (HNQ). Elemental analysis, magnetic susceptibility, UV–Vis, IR and Mass spectrometry have all been used to explore the structural characterization of these compounds.
Mustafa Öztatlıcı, Turan Birimoğlu, Semih Güler, Rukiye Betül Çolaksel, Mehmet Tahir Husunet, Mehmet Sönmez   +5 more
wiley   +1 more source

Stability of piecewise flat Ricci flow in three dimensions

Journal 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

The Ricci flow for nilmanifolds

Journal 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

Singularities of three-dimensional Ricci flows

, 2016
The Ricci flow is an evolution of a Riemannian metric driven by a parabolic PDEs and was introduced by Hamilton in 1982. It has been the fundamental tool for some important achievements in geometry in the early 2000s, such as Perelman’s proof of the ...
Sinestrari, C, Carlo Sinestrari, SINESTRARI, CARLO   +2 more
core   +1 more source

Effect of Nanosilica Aggregates/Agglomerates on Functional Properties of Poly(Butylene 2,5‐Furandicarboxylate)‐Based Nanocomposites

Polymer Composites, EarlyView.
Effect of nanosilica aggregates/agglomerates on oxygen and water vapor diffusivity of PBF/SiO2 nanocomposites. ABSTRACT The nanofillers inclusions in poly(butylene 2,5‐furandicarboxylate) (PBF)/SiO2 nanocomposites were found to consist of aggregates and agglomerates of nanosilica particles.
Giovanna Molinari, Lucia Ricci, Carlo Andrea Massa, Micaela Vannini, Laura Sisti, Paola Parlanti, Mauro Gemmi, Damiano Rossi, Maurizia Seggiani, Maria Cristina Righetti   +9 more
wiley   +1 more source

Topological Signals of Singularities in Ricci Flow

Axioms, 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, Howard A. Blair, Matthew Corne, Gordon Jones, Warner A. Miller, Konstantin Mischaikow, Vidit Nanda   +6 more
doaj   +1 more source