Results 81 to 90 of about 473,950 (309)

Fractional Yamabe problem on locally flat conformal infinities of Poincare-Einstein manifolds [PDF]

open access: yes, 2017
We study, in this paper, the fractional Yamabe problem introduced by Gonzalez-Qing on the conformal infinity (M^n, [h]) of a Poincare-Einstein manifold (X^{n+1}, g^{+}) with either n=2 or n> 3 and (M^n, [h]) is locally flat - namely (M, h) is locally ...
Martin Gebhard Mayer, C. B. Ndiaye
semanticscholar   +1 more source

On Four Dimensional Einstein Manifolds

open access: yesCommunications, Faculty Of Science, University of Ankara Series A1Mathematics and Statistics, 1987
The paper contains an argument leading to a classification of Einstein four-manifolds with a 3-dimensional Abelian group of isometries, first established by Kasner in 1923.
openaire   +4 more sources

High‐Resolution Characterization of Protein‐Conjugated, mRNA‐Loaded Lipid Nanoparticles by Analytical Ultracentrifugation

open access: yesAdvanced Functional Materials, EarlyView.
Lipid nanoparticles containing messenger RNA are characterized by sedimentation velocity analytical ultracentrifugation using UltraScan's new Custom Grid algorithm to provide multi‐dimensional distributions for partial specific volume (particle density), molar mass, sedimentation, diffusion, and hydrodynamic radius.
Sophia Bird   +8 more
wiley   +1 more source

Triangle Anomalies from Einstein Manifolds

open access: yes, 2006
The triangle anomalies in conformal field theory, which can be used to determine the central charge a, correspond to the Chern-Simons couplings of gauge fields in AdS under the gauge/gravity correspondence. We present a simple geometrical formula for the
Benvenuti, Sergio   +2 more
core   +3 more sources

Chiral SURMOFs for Vibrational Circular Dichroism: Multiscale Modeling and Experimental Insights

open access: yesAdvanced Functional Materials, EarlyView.
The use of solid‐state vibrational circular dichroism (VCD) for MOFs is still somewhat unexplored, and in this work, it is shown that chiral surface‐anchored MOFs (SURMOFs) grown on CaF2 provide an excellent platform for VCD. Experimental results are validated through multiscale modeling, showing strong agreement across multiple spectroscopic ...
Ana C. Fingolo   +9 more
wiley   +1 more source

On Compact Trans-Sasakian Manifolds

open access: yesAdvances in Mathematical Physics, 2022
We study 3-dimensional compact and simply connected trans-Sasakian manifolds and find necessary and sufficient conditions under which these manifolds are homothetic to Sasakian manifolds.
Ibrahim Al-Dayel, Sharief Deshmukh
doaj   +1 more source

Ricci flow on K\"ahler-Einstein manifolds

open access: yes, 2003
In our previous paper math.DG/0010008, we develop some new techniques in attacking the convergence problems for the K\"ahler Ricci flow. The one of main ideas is to find a set of new functionals on curvature tensors such that the Ricci flow is the ...
Chen, X. X., Tian, G.
core   +1 more source

Laser‐Microscribed Glass Enables Surface‐Microfluidics‐Facilitated, Affordable, Rapid Cancer Diagnosis

open access: yesAdvanced Functional Materials, EarlyView.
A transparent, laser‐microscribed glass platform enables cancer diagnosis within 1 h—much faster than histology, which takes days, and free from the chemical or contrast risks of MRI or CT scans. The antibody‐functionalized rough glass surface captures viable cancer cells directly from suspension, allowing instant optical readout and offering a rapid ...
Anish Pal   +5 more
wiley   +1 more source

Generalized Ricci solitons and Einstein metrics on weak K-contact manifolds

open access: yesCommunications in Analysis and Mechanics, 2023
We study so-called "weak" metric structures on a smooth manifold, which generalize the metric contact and $ K $-contact structures and allow a new look at the classical theory.
Vladimir Rovenski
doaj   +1 more source

Spectral geometry of $eta$-Einstein Sasakian manifolds

open access: yes, 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   +21 more
core   +1 more source

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