Results 31 to 40 of about 245,161 (291)

A First Approach to Quantum Logical Shape Classification Framework

open access: yesMathematics
Quantum logic is a well-structured theory, which has recently received some attention because of its fundamental relation to quantum computing. However, the complex foundation of quantum logic borrowing concepts from different branches of mathematics as ...
Alexander Köhler   +2 more
doaj   +1 more source

Spectrum of free-form Sudoku graphs

open access: yesOpen Mathematics, 2018
A free-form Sudoku puzzle is a square arrangement of m ×m cells such that the cells are partitioned into m subsets (called blocks) of equal cardinality. The goal of the puzzle is to place integers 1, . .
Abudayah Mohammad   +2 more
doaj   +1 more source

Simple eigenvectors of unbounded operators of the type “normal plus compact” [PDF]

open access: yesOpuscula Mathematica, 2015
The paper deals with operators of the form \(A=S+B\), where \(B\) is a compact operator in a Hilbert space \(H\) and \(S\) is an unbounded normal one in \(H\), having a compact resolvent.
Michael Gil'
doaj   +1 more source

Correlation between diffusion tensor indices and fascicular morphometric parameters of peripheral nerve

open access: yesFrontiers in Physiology, 2023
Introduction: Diffusion tensor imaging (DTI) is a magnetic resonance imaging (MRI) technique that measures the anisotropy of water diffusion. Clinical magnetic resonance imaging scanners enable visualization of the structural integrity of larger axonal ...
Luka Pušnik   +5 more
doaj   +1 more source

Non-regular eigenstate of the XXX model as some limit of the Bethe state

open access: yes, 2001
For the one-dimensional XXX model under the periodic boundary conditions, we discuss two types of eigenvectors, regular eigenvectors which have finite-valued rapidities satisfying the Bethe ansatz equations, and non-regular eigenvectors which are ...
Alcaraz F C   +23 more
core   +1 more source

Reversible Self-Dual Codes Over the Ring F2 + uF2

open access: yesIEEE Access
In this study, we introduce bisymmetric self-dual codes over the finite field ${\mathbb F}_{2}$ of order two. We developed a method to generate binary bisymmetric self-dual codes from a small-length bisymmetric self-dual code by increasing its length ...
Hyun Jin Kim, Whan-Hyuk Choi
doaj   +1 more source

Second order accurate distributed eigenvector computation for extremely large matrices

open access: yes, 2009
We propose a second-order accurate method to estimate the eigenvectors of extremely large matrices thereby addressing a problem of relevance to statisticians working in the analysis of very large datasets.
d'Aspremont, Alexandre   +1 more
core   +2 more sources

Invertibility of graph translation and support of Laplacian Fiedler vectors

open access: yes, 2017
The graph Laplacian operator is widely studied in spectral graph theory largely due to its importance in modern data analysis. Recently, the Fourier transform and other time-frequency operators have been defined on graphs using Laplacian eigenvalues and ...
Begué, Matthew, Okoudjou, Kasso A.
core   +1 more source

Nonlinear Eigenvalue Approach to Differential Riccati Equations for Contraction Analysis [PDF]

open access: yes, 2016
In this paper, we extend the eigenvalue method of the algebraic Riccati equation to the differential Riccati equation (DRE) in contraction analysis. One of the main results is showing that solutions to the DRE can be expressed as functions of nonlinear ...
Kawano, Yu, Ohtsuka, Toshiyuki
core   +3 more sources

Multimodal Data‐Driven Microstructure Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang   +4 more
wiley   +1 more source

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