Results 51 to 60 of about 4,004,008 (323)

Uniform Energy Bound and Morawetz Estimate for Extreme Components of Spin Fields in the Exterior of a Slowly Rotating Kerr Black Hole I: Maxwell Field [PDF]

open access: yesAnnales de l'Institute Henri Poincare. Physique theorique, 2017
This first part of the series treats the Maxwell equations in the exterior of a slowly rotating Kerr black hole. By performing a first-order differential operator on each extreme Newman–Penrose (N–P) scalar in a Kinnersley tetrad, the resulting equation ...
Siyuan Ma
semanticscholar   +1 more source

Asymptotic Sharpness of Bounds on Hypertrees

open access: yesDiscussiones Mathematicae Graph Theory, 2017
The hypertree can be defined in many different ways. Katona and Szabó introduced a new, natural definition of hypertrees in uniform hypergraphs and investigated bounds on the number of edges of the hypertrees.
Lin Yi, Kang Liying, Shan Erfang
doaj   +1 more source

The Largest Laplacian and Signless Laplacian H-Eigenvalues of a Uniform Hypergraph [PDF]

open access: yes, 2013
In this paper, we show that the largest Laplacian H-eigenvalue of a $k$-uniform nontrivial hypergraph is strictly larger than the maximum degree when $k$ is even. A tight lower bound for this eigenvalue is given.
Hu, Shenglong, Qi, Liqun, Xie, Jinshan
core  

AN OPTIMAL BOUND FOR THE RATIO BETWEEN ORDINARY AND UNIFORM EXPONENTS OF DIOPHANTINE APPROXIMATION [PDF]

open access: yesMathematika, 2018
We provide a lower bound for the ratio between the ordinary and uniform exponent of both simultaneous Diophantine approximation and Diophantine approximation by linear forms in any dimension.
Antoine Marnat, N. Moshchevitin
semanticscholar   +1 more source

Uniform Bounds for Sampling Expansions

open access: yesJournal of Approximation Theory, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Jumping to a Uniform Upper Bound [PDF]

open access: yesProceedings of the American Mathematical Society, 1982
A uniform upper bound on a class of Turing degrees is the Turing degree of a function which parametrizes the collection of all functions whose degree is in the given class. I prove that if a _ \underline a is a uniform upper bound on an ideal of degrees then a _ \underline a is the
openaire   +2 more sources

Uniform bounds on multigraded regularity [PDF]

open access: yesJournal of Algebraic Geometry, 2005
We give an effective uniform bound on the multigraded regularity of a subscheme of a smooth projective toric variety X with a given multigraded Hilbert polynomial. To establish this bound, we introduce a new combinatorial tool, called a Stanley filtration, for studying monomial ideals in the homogeneous coordinate ring of X.
Maclagan, Diane, Smith, Gregory G.
openaire   +2 more sources

Predicting Chronicity in Children and Adolescents With Newly Diagnosed Immune Thrombocytopenia at the Timepoint of Diagnosis Using Machine Learning‐Based Approaches

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Objectives To identify predictors of chronic ITP (cITP) and to develop a model based on several machine learning (ML) methods to estimate the individual risk of chronicity at the timepoint of diagnosis. Methods We analyzed a longitudinal cohort of 944 children enrolled in the Intercontinental Cooperative immune thrombocytopenia (ITP) Study ...
Severin Kasser   +6 more
wiley   +1 more source

Plasmonic Jackiw-Rebbi Modes in Graphene Waveguide Arrays

open access: yesApplied Sciences, 2019
We investigate the topological bound modes of surface plasmon polaritons (SPPs) in a graphene pair waveguide array. The arrays are with uniform inter-layer and intra-layer spacings but the chemical potential of two graphene in each pair are different ...
Chunyan Xu   +5 more
doaj   +1 more source

A non-uniform bound on Poisson approximation for a sum of negative binomial random variables [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2017
This paper uses the Stein–Chen method to determine a non-uniform bound on the point metric between the distribution of a sum of independent negative binomial random variables and a Poisson distribution with mean 1 n i i i r q     , where r i
Kanint Teerapabolarn
doaj   +1 more source

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