Results 11 to 20 of about 424,711 (307)

Critical Metrics and Covering Number [PDF]

open access: yes, 2022
In both quantum computing and black hole physics, it is natural to regard some deformations, infinitesimal unitaries, as \emph{easy} and others as \emph{hard}. This has lead to a renewed examination of right-invariant metrics on $\operatorname{SU}(2^N)$. It has been hypothesized that there is a critical such metric -- in the sense of phase transitions -
Freedman, Mike
openaire   +3 more sources

On the existence of critical compatible metrics on contact 3‐manifolds [PDF]

open access: yesBulletin of the London Mathematical Society
AbstractWe disprove the generalized Chern–Hamilton conjecture on the existence of critical compatible metrics on contact 3‐manifolds. More precisely, we show that a contact 3‐manifold admits a critical compatible metric for the Chern–Hamilton energy functional if and only if it is Sasakian or its associated Reeb flow is ‐conjugate to an algebraic ...
Y. Mitsumatsu   +2 more
openaire   +5 more sources

Homogeneous and curvature homogeneous Lorentzian critical metrics [PDF]

open access: yes, 2022
We determine all three-dimensional homogeneous and 1 -curvature homogeneous Lorentzian metrics which are critical for a quadratic curvature functional.
Brozos-Vázquez, Miguel   +5 more
core   +1 more source

A Cross-Sectional Study of the Clinical Metrics of Functional Status Tools in Pediatric Critical Illness [PDF]

open access: yes, 2021
OBJECTIVES: To determine the clinical metrics of functional assessments in pediatric critical illness survivors. DESIGN: Cross-sectional observational study. SETTING: PICU follow-up clinic.
Puthucheary, ZA   +11 more
core   +2 more sources

Curvature homogeneous critical metrics in dimension three [PDF]

open access: yes, 2022
Accepted manuscript[Abstract] We study curvature homogeneous three-manifolds modeled on a symmetric space which are critical for some quadratic curvature functional.
Brozos-Vázquez, Miguel   +2 more
core   +1 more source

The precursor to an industrial software metrics program [PDF]

open access: yes, 2008
A common reason for why software metric programs dasiafailpsila is through lack of participant support and commitment. In this paper, we describe the results of a study which examined the knowledge that subjects had and the opinions they had formed of ...
Lycett, M   +9 more
core   +1 more source

Scene-Dependency of Spatial Image Quality Metrics [PDF]

open access: yes, 2020
This thesis is concerned with the measurement of spatial imaging performance and the modelling of spatial image quality in digital capturing systems. Spatial imaging performance and image quality relate to the objective and subjective reproduction of ...
Fry, E.
core   +1 more source

Critical metrics for quadratic curvature functionals on some solvmanifolds [PDF]

open access: yes, 2023
We prove the existence of four-dimensional compact manifolds admitting some non-Einstein Lorentzian metrics, which are critical points for all quadratic curvature functionals.
Giovanni Calvaruso, Amirhesam Zaeim
core   +1 more source

Early hyperoxia and 28-day mortality in patients on venoarterial ECMO support for refractory cardiogenic shock: a bicenter retrospective propensity score-weighted analysis

open access: yesCritical Care, 2022
Background The mortality rate for a patient with a refractory cardiogenic shock on venoarterial (VA) extracorporeal membrane oxygenation (ECMO) remains high, and hyperoxia might worsen this prognosis.
Mouhamed Djahoum Moussa   +20 more
doaj   +1 more source

Complex Deformation of Critical Kähler Metrics [PDF]

open access: yesJournal of Mathematical Study, 2017
In this paper, we use Pacard-Xu's methods to discuss the complex deformation of constant scalar curvature metrics in the case of fixed and varying complex structures. Moreover, we also discuss the complex deformation of Kähler Ricci solitons.
openaire   +2 more sources

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