Results 31 to 40 of about 161,308 (277)

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

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   +2 more sources

Electronic Fourier–Galois Spectrum Analyzer for the Field GF(31)

open access: yesApplied Sciences
A scheme for the Fourier–Galois spectrum analyzer for the field GF(31) is proposed. It is shown that this analyzer allows for solving a wide enough range of problems related to image processing, in particular those arising in the course of experimental ...
Kaisarali Kadyrzhan   +5 more
doaj   +1 more source

QCD multiplet bases with arbitrary parton ordering

open access: yesJournal of High Energy Physics, 2018
We develop an algorithm for recursively constructing orthogonal multiplet bases for the color space of QCD, for any order of partons and any N c . This recipe is then applied for explicitly constructing some of these bases.
Malin Sjodahl, Johan Thorén
doaj   +1 more source

A Rotation Procedure to Improve Seasonally Varying Empirical Orthogonal Function Bases for MJO Indices

open access: yesGeophysical Research Letters, 2022
Various indices have been defined to characterize the phase and amplitude of the Madden‐Julian oscillation (MJO). One widely used index is the outgoing longwave radiation (OLR) based MJO index (OMI), which is calculated using the spatial pattern of 30–96‐
Sarah Weidman   +2 more
doaj   +1 more source

Block orthogonal polynomials: I. Definition and properties

open access: yes, 2007
Constrained orthogonal polynomials have been recently introduced in the study of the Hohenberg-Kohn functional to provide basis functions satisfying particle number conservation for an expansion of the particle density.
Abramowitz M   +17 more
core   +4 more sources

Application of Partial Discrete Logarithms for Discrete Logarithm Computation

open access: yesComputers
A novel approach to constructing an algorithm for computing discrete logarithms, which holds significant interest for advancing cryptographic methods and the applied use of multivalued logic, is proposed.
Dina Shaltykova   +3 more
doaj   +1 more source

Three-by-three bound entanglement with general unextendible product bases

open access: yes, 2011
We discuss the subject of Unextendible Product Bases with the orthogonality condition dropped and we prove that the lowest rank non-separable positive-partial-transpose states, i.e.
Harris J.   +3 more
core   +1 more source

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

open access: yesMolecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson   +9 more
wiley   +1 more source

Orthogonal Appell bases for Hodge-de Rham systems in Euclidean spaces [PDF]

open access: yes, 2011
Recently the Gelfand-Tsetlin construction of orthogonal bases has been explicitly described for the spaces of k-homogeneous polynomial solutions of the Hodge-de Rham system in the Euclidean space R^m which take values in the space of s-vectors.
Lavicka, Roman
core  

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