Results 61 to 70 of about 27,878 (202)

ON PARAMETRIZED HERMITE-HADAMARD TYPE INEQUALITIES [PDF]

Facta Universitatis, Series: Mathematics and Informatics, 2019
In recent years, many results have been devoted to the well-known Hermite-Hadamard inequality. This inequality has many applications in the area of pure and applied mathematics. In this paper, our main aim is to give a parametrized inequality of the Hermite-Hadamard type and its applications to f-divergence measures and means.First, we prove the ...
Khan, Muhammad Adil, Khurshid, Yousaf
openaire   +2 more sources

Bayesian inference for dynamic Q matrices and attribute trajectories in hidden Markov diagnostic classification models

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Hidden Markov diagnostic classification models capture how students' cognitive attributes evolve over time. This paper introduces a Bayesian Markov chain Monte Carlo algorithm for diagnostic classification models that jointly estimates time‐varying Q matrices, latent attributes, item parameters, attribute class proportions and transition ...
Chen‐Wei Liu
wiley   +1 more source

Further refinements of the Cauchy-Schwarz inequality for matrices [PDF]

, 2014
Let $A, B$ and $X$ be $n\times n$ matrices such that $A, B$ are positive semidefinite. We present some refinements of the matrix Cauchy-Schwarz inequality by using some integration techniques and various refinements of the Hermite--Hadamard inequality ...
Bakherad, Mojtaba
core  

Gradual Changes in Functional Time Series

Journal of Time Series Analysis, EarlyView.
ABSTRACT We consider the problem of detecting gradual changes in the sequence of mean functions from a not necessarily stationary functional time series. Our approach is based on the maximum deviation (calculated over a given time interval) between a benchmark function and the mean functions at different time points.
Patrick Bastian, Holger Dette
wiley   +1 more source

On some integral inequalities for s-geometrically convex functions and their applications [PDF]

, 2012
In this paper, we establish three inequalities for differentiable s-geometrically and geometrically convex functions which are connected with the famous Hermite-Hadamard inequality holding for convex functions.
Tunc, Mevlut
core  

A reverse Hadamard inequality

Linear Algebra and its Applications, 1996
Let \(U\) be a unitary \(n\times n\) matrix with determinant equal to 1. Let \(A\) be an \(n\times n\) real matrix with rank at most 2 and all entries at least 1. Then \(\text{det} (A\bullet U) \geq 1\), where \(A\bullet U\) is the elementwise product of \(A\) and \(U\).
Ambikkumar, S., Drury, S.W.
openaire   +2 more sources

HADAMARD INEQUALITIES FOR WRIGHT-CONVEX FUNCTIONS [PDF]

Demonstratio Mathematica, 2004
The Hadamard inequalities for convex functions were refined by \textit{S. S. Dragomir} [J. Math. Anal. Appl. 167, No. 1, 49--56 (1992; Zbl 0758.26014)] and \textit{G.-S. Yang} and \textit{M.-C. Hong} [Tamkang J. Math. 28, No. 1, 33--37 (1997; Zbl 0880.26019)]. In this paper the authors establish such refined inequalities for Wright-convex functions.
Tseng, Kuei-Lin, Yang, Gou-Sheng, Dragomir, Sever S   +2 more
openaire   +2 more sources

Tensor Changepoint Detection and Eigenbootstrap

Journal of Time Series Analysis, EarlyView.
ABSTRACT Tensor data consisting of multivariate outcomes over the items and across the subjects with longitudinal and cross‐sectional dependence are considered. A completely distribution‐free and tweaking‐parameter‐free detection procedure for changepoints at different locations is designed, which does not require training data.
Michal Pešta, Barbora Peštová, Martin Romaňák   +2 more
wiley   +1 more source

An Hadamard-type inequality

Linear Algebra and its Applications, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bekjan, Turdebek N., Raikhan, Madi
openaire   +2 more sources

Minkowski Inequality in Cartan–Hadamard Manifolds

International Mathematics Research Notices, 2023
Abstract Using harmonic mean curvature flow, we establish a sharp Minkowski-type lower bound for total mean curvature of convex surfaces with a given area in Cartan-Hadamard $3$-manifolds. This inequality also improves the known estimates for total mean curvature in hyperbolic $3$-space.
Ghomi, Mohammad, Spruck, Joel
openaire   +2 more sources