Results 31 to 40 of about 22,113 (299)

Orthogonal Bandlet Bases for Geometric Images Approximation [PDF]

open access: yes, 2008
International audienceThis paper introduces orthogonal bandelet bases to approximate images having some geometrical regularity. These bandelet bases are computed by applying parametrized Alpert transform operators over an orthogonal wavelet basis.
Mallat, Stéphane, Peyré, Gabriel
core   +1 more source

Approximation of Double-dimensional Densities of Probabilities by Orthogonal Bases

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2009
Approach to approximation of double-dimensional densities of probabilities in rectangle areas by the families of double-dimensional orthogonal functions created by multiplication of single-dimensional orthogonal functions is studied. Calculation formulas
l. A. Lyozin
doaj   +1 more source

Strong quantum nonlocality and unextendibility without entanglement in $N$-partite systems with odd $N$ [PDF]

open access: yesQuantum
A set of orthogonal product states is strongly nonlocal if it is locally irreducible in every bipartition, which shows the phenomenon of strong quantum nonlocality without entanglement.
Yiyun He, Fei Shi, Xiande Zhang
doaj   +1 more source

INTERPOLATING WAVELETS ON THE SPHERE

open access: yesUral Mathematical Journal, 2019
There are several works where bases of wavelets on the sphere (mainly orthogonal and wavelet-like bases) were constructed. In all such constructions, the authors seek to preserve the most important properties of classical wavelets including constructions
Nikolai I. Chernykh
doaj   +1 more source

Orthogonality for Quantum Latin Isometry Squares [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2019
Goyeneche et al recently proposed a notion of orthogonality for quantum Latin squares, and showed that orthogonal quantum Latin squares yield quantum codes.
Benjamin Musto, Jamie Vicary
doaj   +1 more source

Numeric-analytical approach to integrals calculation at construction of orthogonal models

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2009
The numeric-analytical method of calculation of the integrals is proposed for construction of orthogonal models. The given method allows to increase the accuracy of orthogonal models due to obtained algebraic and recurrent relations for integrals used ...
S. A. Prokhorov, I. M. Kulikovskikh
doaj   +1 more source

Application of the Algebraic Extension Method to the Construction of Orthogonal Bases for Partial Digital Convolutions

open access: yesAlgorithms
Mathematical tools have been developed that are analogous to the tool that allows one to reduce the description of linear systems in terms of convolution operations to a description in terms of amplitude-frequency characteristics.
Aruzhan Kadyrzhan   +3 more
doaj   +1 more source

Experimental demonstrations of unconditional security in a purely classical regime

open access: yesScientific Reports, 2021
So far, unconditional security in key distribution processes has been confined to quantum key distribution (QKD) protocols based on the no-cloning theorem of nonorthogonal bases.
Byoung S. Ham
doaj   +1 more source

Invariant operators, orthogonal bases and correlators in general tensor models

open access: yesNuclear Physics B, 2018
We study invariant operators in general tensor models. We show that representation theory provides an efficient framework to count and classify invariants in tensor models of (gauge) symmetry Gd=U(N1)⊗⋯⊗U(Nd).
Pablo Diaz, Soo-Jong Rey
doaj   +1 more source

Dynamic Modelling and Optimal Control of a Rotor of Active Magnetic Bearings [PDF]

open access: yesInternational Journal of Industrial Electronics, Control and Optimization, 2019
Active magnetic bearings (AMBs) are relatively new members in bearings family. Against other bearings which support loads by forces produced by fluid film pressure or physical contact, AMBs support loads by magnetic fields without any contact with the ...
Rohollah Dosthosseini   +2 more
doaj   +1 more source

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