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QUANTUM SYMMETRIES OF HADAMARD MATRICES
We define quantum automorphisms and isomorphisms of Hadamard matrices. We show that every Hadamard matrix of size N >= 4 has quantum symmetries and that all Hadamard matrices of a fixed size are mutually quantum isomorphic....
Pure mathematics
- 2024 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
On the Hadamard determinant
We introduce the Hadamard theorem and then formulate the Hadamard determinant problem. We also present several applications of the Hadamard matrices....
BA - Obecná matematika
- 2012 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Factorization of the characteristic function of a Jacobi matrix
that the characteristic function admits Hadamard's factorization in two possible ways { either...
Pure mathematics
- 2017 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
A Contribution of Liouville-Type Theorems to the Geometry in the Large of Hadamard Manifolds
A complete, simply connected Riemannian manifold of nonpositive sectional curvature is called a Hadamard manifold. In this article, we prove Liouville-type theorems for isometric and harmonic self-diffeomorphisms of Hadamard manifol...
Pure mathematics
- 2022 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Sylvester-Hadamard Matrices, Krawtchouk Matrices and Sylvester-Kac Matrices
In the paper Sylvester-Hadamard Matrices, Krawtchouk Matrices, Sylvester-Kac Matrices and their relationships are presented.
Pure mathematics
- 2017 •
- Jost
Rok uplatnění
Jost - Ostatní články v recenzovaných periodicích
Graph Designs, Hadamard matrices and geometric configurations
Graph Designs, Hadamard matrices and geometric configurations...
BA - Obecná matematika
- 1999 •
- D
Rok uplatnění
D - Stať ve sborníku
Bases of Cycle Lattices and Submatrices of a Hadamard Matrix
Bases of Cycle Lattices and Submatrices of a Hadamard Matrix...
BA - Obecná matematika
- 1999 •
- D
Rok uplatnění
D - Stať ve sborníku
Derivatives of Hadamard type in vector optimization
In our paper we will continue the comparison which was started by Vsevolod I. Ivanov (Nonlinear Analysis 125 (2015), 270-289), where he compared scalar optimality conditions stated in terms of Hadamard derivatives for arbitrary functions and...
Applied mathematics
- 2018 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Infinite Products for Regularized Characteristic Function of Jacobi Operator
for the regularized characteristic function in terms of the infinite product of Hadamard type...
BA - Obecná matematika
- 2011 •
- D
Rok uplatnění
D - Stať ve sborníku
Properties of Hadamard Directional Derivatives: Denjoy-Young-Saks Theorem for Functions on Banach Spaces
The classical Denjoy-Young-Saks theorem on Dini derivatives of arbitrary functions of one variable was extended by U.S. Haslam-Jones (1932) and A.J. Ward (1935) to arbitrary functions of two variables. Our main result extends the theorem of Haslam-Jo...
BA - Obecná matematika
- 2015 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
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