Results 81 to 90 of about 71,844 (227)
Quaternionic reduction and Einstein manifolds [PDF]
Communications in Analysis and Geometry, 1993 A quaternionic Kähler manifold \((M,g)\) is a Riemannian manifold of dimension \(4n\), \(n>1\), whose holonomy group is a subgroup of \(\text{Sp}(n) \cdot\text{Sp} (1)\). It is always an Einstein manifold. Many of the developments concerning quaternionic Kähler manifolds were due to the introduction of various associated fibrations relating such ...
Charles P. Boyer +2 more
openaire +1 more source
Batteries &Supercaps, Volume 8, Issue 3, March 2025.A novel and comprehensive 3D‐resolved kinetic Monte Carlo model coupled with mean square displacement analysis is introduced. This computational approach allows to explore, for the first time, the concentration and the state of charge effects on ionic diffusion coefficient and viscosity in methyl viologen‐based electrolytes used in organic redox flow ...
Jia Yu +2 more
wiley +1 more source
ON GENERALIZED φ −RECURRENT KENMOTSU MANIFOLDS
Süleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2009 : The purpose of this paper is to study generalized φ − recurrent Kenmotsu manifolds. Key words: Kenmotsu manifold, generalized recurrent, φ − recurrent manifold, Einstein manifold.
Aslı BAŞARI
doaj
On Submanifolds of $N(k)$-Quasi Einstein Manifolds with a Type of Semi-Symmetric Metric Connection
Universal Journal of Mathematics and Applications, 2020 In this study, we consider the $ N(k)- $quasi Einstein manifolds with respect to a type of semi-symmetric metric connection. We suppose that the generator of $ N(k)- $quasi-Einstein manifolds is parallel with respect to semi-symmetric metric connection
İnan Ünal
doaj +1 more source
Chemistry–Methods, EarlyView.A customized apparatus for operando plasma‐diffuse reflectance infrared Fourier transform spectroscopy is developed by modifying the dome of a commercially available Harrick reaction chamber. The designed high‐voltage electrode is mounted and attached within a cylindrical holder made of PEEK.
Dilver Peña Fuentes +8 more
wiley +1 more source
Einstein like -para Sasakian manifolds
Kuwait Journal of Science, 2013 Einstein like -para Sasakian manifolds are introduced. For an -para Sasakian manifold to be Einstein like, a necessary and sufficient condition in terms of its curvature tensor is obtained.
SADIK KELES +3 more
doaj
ChemPhysChem, Volume 26, Issue 6, March 15, 2025.What happens, if in the synthesis of flat silver platelets, the slow deposition of silver along twinning faults is disturbed by the addition of a nobler metal? We have looked into it and found a way to fine‐tune the metal deposition in lateral and vertical direction.
Jonas Kluitmann +3 more
wiley +1 more source
On the structure of almost Einstein manifolds [PDF]
Journal of the American Mathematical Society, 2015 In this paper, we study the structure of the limit space of a sequence of almost Einstein manifolds, which are generalizations of Einstein manifolds. Roughly speaking, such manifolds are the initial manifolds of some normalized Ricci flows whose scalar curvatures are almost constants over space-time in the L 1 L^1 ...
Bing Wang, Gang Tian
openaire +3 more sources
Atomically Dispersed Palladium Promoted Suzuki–Miyaura Cross Coupling
ChemSusChem, EarlyView.An isolated palladium catalyst supported on polymeric carbon nitride is prepared and applied for the Suzuki‐coupling reaction under ligand‐free conditions at room temperature. Moreover, in situ infrared spectroscopy reveals the role of the base K2CO3 and characterizes the dynamic changes in substrate consumption and product formation during the cross ...
Junhao Huang +8 more
wiley +1 more source
Construction of an A-manifold on a principal torus bundle
Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2013 We construct a new example of an A-manifold, i.e. a Riemannian manifold with cyclic-parallel Ricci tensor. This condition can be viewed as a generalization of the Einstein condition.
Grzegorz Zborowski
doaj