Results 31 to 40 of about 5,807,139 (254)

On the generalized Hadamard product and the Jordan-Hadamard product [PDF]

open access: yesBulletin of the Australian Mathematical Society, 1980
The generalized Hadamard product S * T and the Jordan-Hadamard product S ∘ T of two operator-matrices S and T are introduced. They coincide with the usual Hadamard product of two complex matrices when the underlying Hilbert spaces are one-dimensional. Some inequalities which hold true for the usual Hadamard product of positive definite complex matrices
Chuan, Jen-chung, Chuan, Wai-fong
openaire   +2 more sources

Gorenstein points in $${\mathbb {P}}^{3}$$ P 3 via Hadamard products of projective va

open access: yesCollectanea Mathematica, 2022
We show how to construct a stick figure of lines in $${\mathbb {P}}^3$$ P 3 using the Hadamard product of projective varieties. Then, applying the results of Migliore and Nagel, we use such a stick figure to build a Gorenstein set of points with given ...
C. Bocci, C. Capresi, D. Carrucoli
semanticscholar   +1 more source

Green Matrices, Minors and Hadamard Products

open access: yesAxioms, 2023
Green matrices are interpreted as discrete version of Green functions and are used when working with inhomogeneous linear system of differential equations.
Jorge Delgado   +2 more
doaj   +1 more source

A repertoire for additive functionals of uniformly distributed m-ary search trees [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
Using recent results on singularity analysis for Hadamard products of generating functions, we obtain the limiting distributions for additive functionals on $m$-ary search trees on $n$ keys with toll sequence $(i) n^α$ with $α ≥ 0 (α =0$ and $α =1 ...
james Allen fill, Nevin Kapur
doaj   +1 more source

Hermite–Hadamard and Pachpatte Type Inequalities for Coordinated Preinvex Fuzzy-Interval-Valued Functions Pertaining to a Fuzzy-Interval Double Integral Operator

open access: yesMathematics, 2022
Many authors have recently examined the relationship between symmetry and generalized convexity. Generalized convexity and symmetry have become a new area of study in the field of inequalities as a result of this close relationship.
Gustavo Santos-García   +4 more
doaj   +1 more source

Spectral Decomposition of Gramians of Continuous Linear Systems in the Form of Hadamard Products

open access: yesMathematics, 2023
New possibilities of Gramian computation, by means of canonical transformations into diagonal, controllable, and observable canonical forms, are shown. Using such a technique, the Gramian matrices can be represented as products of the Hadamard matrices ...
Igor Yadykin
doaj   +1 more source

Weighted Ehrhart series, rational Hadamard products, and permutation statistics [PDF]

open access: yes, 2023
Tielker E. Weighted Ehrhart series, rational Hadamard products, and permutation statistics.
Tielker, Elena
core   +1 more source

A quadratic bilinear equation arising from the quadratic dynamical system [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2021
A quadratic dynamical system with practical applications is taken into consideration. This system is transformed into a new bilinear system with Hadamard products by means of the implicit matrix structure. The corresponding quadratic bilinear equation is
Bo Yu, Ning Dong, Qiong Tang
doaj   +1 more source

Projective surfaces not as Hadamard products and the dimensions of the Hadamard joins [PDF]

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.
Ballico, Edoardo
openaire   +5 more sources

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