Results 11 to 20 of about 22,113 (299)

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

A new description of orthogonal bases [PDF]

open access: yesMathematical Structures in Computer Science, 2012
We show that an orthogonal basis for a finite-dimensional Hilbert space can be equivalently characterised as a commutative †-Frobenius monoid in the category FdHilb, which has finite-dimensional Hilbert spaces as objects and continuous linear maps as morphisms, and tensor product for the monoidal structure.
Bob Coecke, Dusko Pavlovic, Jamie Vicary
openaire   +13 more sources

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   +3 more sources

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

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

Homeomorphic Images of Orthogonal Bases [PDF]

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 the Orthogonal Bases of Symmetry Classes [PDF]

open access: yesJournal of Algebra, 1999
Let \(V\) be an \(n\)-dimensional complex inner product space and let \(\{e_1,\dots,e_n\}\) be an orthonormal basis of \(V\). Suppose \(G\) is a permutation group of degree \(m\) and \(X\) is an irreducible character of \(G\). The symmetry class of tensors associated with \(G\) and \(X\) is denoted by \(V_X(G)\).
Shahryari, M.
openaire   +2 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   +1 more source

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

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