Results 21 to 30 of about 339,646 (271)

Curvature Invariants for Statistical Submanifolds of Hessian Manifolds of Constant Hessian Curvature

open access: yesMathematics, 2018
We consider statistical submanifolds of Hessian manifolds of constant Hessian curvature. For such submanifolds we establish a Euler inequality and a Chen-Ricci inequality with respect to a sectional curvature of the ambient Hessian manifold.
Adela Mihai, Ion Mihai
doaj   +1 more source

Lagrangian submanifolds in complex space forms satisfying an improved equality involving δ(2,2) [PDF]

open access: yes, 2013
It was proved in [8, 9] that every Lagrangian submanifold M of a complex space form M˜ 5 (4c) of constant holomorphic sectional curvature 4c satisfies the following optimal inequality: δ(2, 2) ≤ 25 4 H 2 + 8c, (A) where H 2 is the squared mean curvature
Chen, Bang-Yen   +2 more
core   +1 more source

Characterizations of matrix and operator-valued Φ-entropies, and operator Efron-Stein inequalities [PDF]

open access: yes, 2016
© 2016 The Author(s). We derive new characterizations of the matrix Φ-entropy functionals introduced in Chen & Tropp (Chen, Tropp 2014 Electron. J. Prob. 19, 1-30. (doi:10.1214/ejp.v19-2964)).
Cheng, HC, Hsieh, MH
core   +3 more sources

On Chen invariants and inequalities in quaternionic geometry [PDF]

open access: yesJournal of Inequalities and Applications, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

δ(2,2)-Invariant for Lagrangian Submanifolds in Quaternionic Space Forms

open access: yesMathematics, 2020
In the geometry of submanifolds, Chen inequalities represent one of the most important tool to find relationships between intrinsic and extrinsic invariants; the aim is to find sharp such inequalities. In this paper we establish an optimal inequality for
Gabriel Macsim, Adela Mihai, Ion Mihai
doaj   +1 more source

On Lyapunov-type inequalities for two-dimensional nonlinear partial systems [PDF]

open access: yes, 2010
We establish a new Laypunov-type inequality for two nonlinear systems of partial differential equations and the discrete analogue is also established. As application, boundness of the two-dimensional Emden-Fowler-type equation is proved. Copyright © 2010
Chen, LY, Cheung, WS, Zhao, CJ
core   +3 more sources

Optimal Uniform Convergence Rates and Asymptotic Normality for Series Estimators Under Weak Dependence and Weak Conditions [PDF]

open access: yes, 2014
We show that spline and wavelet series regression estimators for weakly dependent regressors attain the optimal uniform (i.e. sup-norm) convergence rate $(n/\log n)^{-p/(2p+d)}$ of Stone (1982), where $d$ is the number of regressors and $p$ is the ...
Chen, Xiaohong, Christensen, Timothy
core   +4 more sources

A New Estimate on the Rate of Convergence of Durrmeyer-Bézier Operators

open access: yesJournal of Inequalities and Applications, 2009
We obtain an estimate on the rate of convergence of Durrmeyer-Bézier operaters for functions of bounded variation by means of some probabilistic methods and inequality techniques. Our estimate improves the result of Zeng and Chen (2000).
Pinghua Wang, Yali Zhou
doaj   +2 more sources

Growth and Regional Inequality in China During the Reform Era [PDF]

open access: yes, 2003
Chinese city-level data indicate that differences in growth rates are far more severe than indicated in previous studies which typically use data at higher levels of aggregation. We estimate growth equations using city-level data and find that the policy
Jones, Derek C., Li, Cheng, Owen, Ann L.
core   +2 more sources

H∞ filtering for uncertain stochastic time-delay systems with sector-bounded nonlinearities [PDF]

open access: yes, 2008
This is the post print version of the article. The official published version can be obtained from the link - Copyright 2008 Elsevier Ltd.In this paper, we deal with the robust H∞ filtering problem for a class of uncertain nonlinear time-delay stochastic
Anderson   +33 more
core   +2 more sources

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