Results 71 to 80 of about 75,365 (285)

Nearly Einstein manifolds

Novi Sad Journal of Mathematics, 2015
Summary: The object of this paper is to define and study a new type of non-flat Riemannian manifolds called nearly Einstein manifolds. The notion of this nearly Einstein manifold has been established by an example and an existence theorem. Some geometric properties are obtained.
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QUASI-EINSTEIN CONTACT METRIC MANIFOLDS [PDF]

Glasgow Mathematical Journal, 2014
AbstractWe consider quasi-Einstein metrics in the framework of contact metric manifolds and prove some rigidity results. First, we show that any quasi-Einstein Sasakian metric is Einstein. Next, we prove that any complete K-contact manifold with quasi-Einstein metric is compact Einstein and Sasakian.
openaire   +2 more sources

Roadmap to Precision 3D Printing of Cellulose: Rheology‐Guided Formulation, Fidelity Assessment, and Application Horizons

Advanced Materials Technologies, EarlyView.
This critical review presents a comprehensive roadmap for the precision 3D printing of cellulose. Quantitative correlations link ink formulation and rheological properties to print fidelity and final material performance. This framework guides the development of advanced functional materials, from biomedical scaffolds to electromagnetic shielding ...
Majed Amini, Hadi Hosseini, Seyyed Alireza Hashemi, Mohammad Arjmand   +3 more
wiley   +1 more source

On quasirecurrent manifolds [PDF]

Mathematica Bohemica
We introduce a type of Riemannian manifolds (namely, quasirecurrent manifold) and study its several geometric properties. Among others, we prove that the scalar curvature of such a manifold is constant, and that the manifold is Einstein under certain ...
Jaeman Kim
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Spectral geometry of $eta$-Einstein Sasakian manifolds

, 2012
We extend a result of Patodi for closed Riemannian manifolds to the context of closed contact manifolds by showing the condition that a manifold is an $\eta$-Einstein Sasakian manifold is spectrally determined.
Blair, Boyer, Branson, Chun, Deshmukh, Donnelly, Gilkey, Gilkey, Hurley, JeongHyeong Park, Jin, Park, Park, Park, Park, Patodi, Pitis, Strese, Tanno, Tsagas, Yano, Zhang   +21 more
core   +1 more source

Microglial Fkbp5 Impairs Post‐Stroke Vascular Integrity and Regeneration by Promoting Yap1‐Mediated Glycolysis and Oxidative Phosphorylation

Advanced Science, EarlyView.
A post‐stroke perivascular niche of microglia characterized by low expression of M2 markers and elevated glycolysis, oxidative phosphorylation (OXPHOS), and phagocytic activity is identified, which is termed stroke‐activated vascular‐associated microglia (stroke‐VAM).
Yanan Li, Yanmei Qiu, Yunlei Yang, Yanhao Wei, Haokun Peng, Longhai Zeng, Pengcheng Li, Rentang Bi, Bo Hu   +8 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
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Coincident Fluorescence‐Burst Analysis of Actin Cargo Molecules in Secreted Single Diffusing Extracellular Vesicles From Human Induced Pluripotent Stem Cells

Advanced Science, EarlyView.
This study presents a two‐color FCCS and coincident‐burst analysis platform to quantify actin cargo in dual‐labeled EVs secreted from hiPSCs. The approach tracks secretion dynamics, confirms actin loading, and measures EV size and cargo number, offering insights into cytoskeletal disruption and neuronal differentiation relevant to neurodegenerative ...
Dang Du Nguyen, Aleksandr Barulin, Won Jong Yu, Jong‐Chan Park, Inki Kim   +4 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, EROL KILIC, MUKUT MANI TRIPATHI, SELCEN YÛKSEL PERKTAS   +3 more
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Rigidity of Weak Einstein-Randers Spaces [PDF]

Sahand Communications in Mathematical Analysis
The Randers metrics are popular metrics similar to the Riemannian metrics, frequently used in physical and geometric studies. The weak Einstein-Finsler metrics are a natural generalization of the Einstein-Finsler metrics.
Behnaz Lajmiri, Behroz Bidabad, Mehdi Rafie-Rad   +2 more
doaj   +1 more source