Results 131 to 140 of about 2,726,393 (218)

Positivity of a Hadamard Product

open access: yes
A notable difference between the ordinary and Hadamard products is that the Hadamard product of two singular positive semidefinite matrices can be nonsingular, and one of the factors can even be indefinite. We present an eigenvalue lower bound for a Hadamard product that depends on the rank, effective condition number, and diagonal entries of one ...
Horn, Roger A.   +3 more
openaire   +2 more sources

Strongly MφMψ -Convex Functions, The Hermite–Hadamard–Fejér Inequality and Related Results

open access: yesAnnales Mathematicae Silesianae
We present Hermite–Hadamard–Fejér type inequalities for strongly MφMψ -convex functions. Some refinements of them and bounds for the integral mean of the product of two functions are also obtained.
Bombardelli Mea, Varošanec Sanja
doaj   +1 more source

Carta signada per Jacques Hadamard a Ferran Sunyer

open access: yes, 1961
Carta signada per Jacques Hadamard, per agrair-li els seus desigs i expressar-li els seus per a ...
Hadamard, Jacques
core   +1 more source

SOME INEQUALITIES OF THE HERMITE HADAMARD TYPE FOR PRODUCT OF TWO FUNCTIONS

open access: yesJournal of New Theory, 2016
Abstaract−In this paper, we shall establish some new inequalities of the Hermite Hadamard type for product of two functions to belong to the class of s-convex functions and the class of h-convex functions.
Nguyen Ngoc Hue, Duong Quoc Huy
doaj  

Projective surfaces not as Hadamard products and the dimensions of the Hadamard joins

open access: yesJournal of Pure and Applied Algebra
We study the dimensions of Hadamard products of $k\ge 3$ varieties if we allow to modify $k-1$ of them by the action of a general projective linear transformation. We also prove that the join of a variety not contained in a coordinate hyperplane with a ``nice'' curve always has the expected dimension.
openaire   +4 more sources

Several refinement of hermite-hadamard inequality

open access: yes, 2017
碩士本論文研究的主要目的是要對Hermite-Hadamard 不等式提供更多的答案。The major goal of this study is to give some answers to the Hermite-Hadamard Inequality.1.緒論 ...........................................頁 1 2.主要結果 .......................................頁 4 3.參考文獻 .............
温麗東;Wen, Li- Tung
core  

The Hadamard multiary quasigroup product

open access: yes
The Hadamard quasigroup product has recently been introduced as a natural generalization of the classical Hadamard product of matrices. It is defined as the superposition operator of three binary operations, one of them being a quasigroup operation. This
Falcón, Raúl M.   +2 more
core  

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