Results 11 to 20 of about 1,155,632 (287)

Trace-orthogonal normal bases [PDF]

open access: yesDiscrete Applied Mathematics, 1993
For \(q\) a prime power and \(n\geq 2\) an integer, let \(GF(q^ n)\) denote the finite field of order \(q^ n\) considered as a vector space of dimension \(n\) over \(GF(q)\). For \(\alpha\in GF(q^ n)\), a basis of the form \((\alpha, \alpha^ q,\cdots, \alpha^{q^{n-1}})\) is called a normal basis of \(GF(q^ n)\) over \(GF(q)\).
Jungnickel, Dieter
openaire   +4 more sources

Optimal and Quasioptimal Algorithms of Distinction of the Compressed Images in Bases of Orthogonal Polynomials

open access: yesCommunications, 2012
The synthesis and analysis of effective practically realized algorithms of distinction of signals and images represented in bases of orthogonal polynomials was executed.
Oleg Vyacheslavovich Chernoyarov   +1 more
doaj   +2 more sources

Gabor orthogonal bases and convexity [PDF]

open access: yesDiscrete Analysis, 2018
Gabor orthogonal bases and convexity, Discrete Analysis 2018:19, 11 pp. A fundamental way of understanding a function $f$ defined on $\mathbb R^d$ is to expand it in terms of a basis with nice properties.
Alex Iosevich, Azita Mayeli
doaj   +2 more sources

Homeomorphic Images of Orthogonal Bases

open access: yesThe Electronic Journal of Linear Algebra, 2016
Necessary and sufficient conditions are obtained for a sequence $\{x_j:~j\in \mathbb J\}$ in a Hilbert space to be, up to the elimination of a finite subset of $\mathbb J$, the linear homeomorphic image of an orthogonal basis of some Hilbert space $K$. This extends a similar result for orthonormal bases due to Holub [J.R. Holub.
Kebryaee, M., Radjabalipour, M.
openaire   +3 more sources

On orthogonal polynomials and related discrete integrable systems [PDF]

open access: yes, 2006
Orthogonal polynomials arise in many areas of mathematics and have been the subject of interest by many mathematicians. In recent years this interest has often arisen from outside the orthogonal polynomial community after their connection with ...
Spicer, Paul Edward
core   +7 more sources

On scalar products in higher rank quantum separation of variables

open access: yesSciPost Physics, 2020
Using the framework of the quantum separation of variables (SoV) for higher rank quantum integrable lattice models [1], we introduce some foundations to go beyond the obtained complete transfer matrix spectrum description, and open the way to the ...
Jean Michel Maillet, Giuliano Niccoli, Louis Vignoli
doaj   +1 more source

Curl-conforming hierarchical vector bases for triangles and tetrahedra [PDF]

open access: yes, 2011
A new family of hierarchical vector bases is proposed for triangles and tetrahedra. These functions span the curl-conforming reduced-gradient spaces of Nédélec.
Peterson A. F.   +9 more
core   +1 more source

Wavelets based on orthogonal polynomials [PDF]

open access: yesMathematics of Computation, 1997
We present a unified approach for the construction of polynomial wavelets. Our main tool is orthogonal polynomials. With the help of their properties we devise schemes for the construction of time localized polynomial bases on bounded and unbounded subsets of the real line. Several examples illustrate the new approach.
Bernd Fischer 0001, Jürgen Prestin
openaire   +2 more sources

The problem of mutually unbiased bases in dimension 6 [PDF]

open access: yes, 2010
We outline a discretization approach to determine the maximal number of mutually unbiased bases in dimension 6. We describe the basic ideas and introduce the most important definitions to tackle this famous open problem which has been open for the ...
Jaming, Philippe   +2 more
core   +1 more source

Features of the construction of information transfer system which using two-dimensional signals [PDF]

open access: yesITM Web of Conferences, 2019
The article deals with analysis of the causes of intersymbol interference and interchannel interference. It is indicated that physically unrealizable orthogonal bases are used to describe systems and signals. The considered interference occurs due to the
Degtyaryov Andrey, Miryanova Vera
doaj   +1 more source

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