Results 51 to 60 of about 298 (123)

Evaluation and analysis of the computation cost of linear network coding

open access: yesTongxin xuebao, 2011
The complexity of algebraic operation methods on Galois fields was analyzed and the operation mechanism of linear network coding was anatomized.Based on deterministic network coding data transmission and random network coding data transmission for single-
PU Bao-xing1, WANG Wei-ping2
doaj   +2 more sources

Ricerche di matematica con Giuseppina Varone

open access: yesScience & Philosophy, 2013
In memory of the researcher Pina Varone, I present the research carried out together for over 20 years. Some relevant issues and applicants were: the connection between teaching and research, and as an in-depth teaching emerge new research topics; the ...
Antonio Maturo
doaj  

A Meta-Logical Framework for the Equivalence of Syntactic and Semantic Theories

open access: yesPhilosophies
This paper introduces a meta-logical framework—based on the theory of institutions (a categorical version of abstract model theory)—to be used as a tool for the formalization of the two main views regarding the structure of scientific theories, namely ...
Maria Dimarogkona   +2 more
doaj   +1 more source

Formal Context Transforms and Their Affordances for Exploratory Data Analysis

open access: yesMathematics
Consider a formal context (G, M, I) as the basic mechanism to capture information about a set G of objects, a set M of attributes and the relation I ∈ G × M between them. Traditional use of Formal Concept Analysis has some shortcomings in its information-
Francisco J. Valverde-Albacete   +4 more
doaj   +1 more source

Nonvanishing minors of eigenvector matrices and consequences

open access: yesSpecial Matrices
For a matrix M∈Kn×n{\bf{M}}\in {{\mathbb{K}}}^{n\times n}, we establish a condition on the Galois group of the characteristic polynomial φM{\varphi }_{{\bf{M}}} that induces nonvanishing of the minors of the eigenvector matrix of M{\bf{M}}.
Emmrich Tarek
doaj   +1 more source

Mereological approach to higher-order structure in complex systems: From macro to micro with Möbius

open access: yesPhysical Review Research
Relating macroscopic observables to microscopic interactions is a central challenge in the study of complex systems. While current approaches often focus on pairwise interactions, a complete understanding requires going beyond these to capture the full ...
Abel Jansma
doaj   +1 more source

Monodromy of a Class of Logarithmic Connections on an Elliptic Curve

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2007
The logarithmic connections studied in the paper are direct images of regular connections on line bundles over genus-2 double covers of the elliptic curve.
Francois-Xavier Machu
doaj  

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