Results 61 to 70 of about 648,267 (220)

κ-Minkowski Spacetimes and DSR Algebras: Fresh Look and Old Problems

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2010
Some classes of Deformed Special Relativity (DSR) theories are reconsidered within the Hopf algebraic formulation. For this purpose we shall explore a minimal framework of deformed Weyl-Heisenberg algebras provided by a smash product construction of DSR ...
Andrzej Borowiec, Anna Pachol
doaj   +1 more source

Formalizing the Process of Constructing Chains of Lexical Units

open access: yesCognitive Studies | Études cognitives, 2015
Formalizing the Process of Constructing Chains of Lexical Units The paper investigates mathematical aspects of describing the construction of chains of lexical units on the basis of finite-predicate algebra.
Grigorij Chetverikov, Iryna Vechirska
doaj   +1 more source

Yangians and Yang–Baxter R-operators for ortho-symplectic superalgebras

open access: yesNuclear Physics B, 2017
Yang–Baxter relations symmetric with respect to the ortho-symplectic superalgebras are studied. We start with the formulation of graded algebras and the linear superspace carrying the vector (fundamental) representation of the ortho-symplectic supergroup.
J. Fuksa   +3 more
doaj   +1 more source

Range Space and Similarity Transformation Using Symbolic Mathematics in Python

open access: yesIEEE Access
Linear systems involved in engineering and scientific calculations can be more easily analyzed using similarity transformation. However, understanding the numerous abstract linear algebra theorems associated with this transformation can be challenging ...
Chainarong Wisassakwichai   +1 more
doaj   +1 more source

Universal geometric cluster algebras [PDF]

open access: yes, 2013
We consider, for each exchange matrix B, a category of geometric cluster algebras over B and coefficient specializations between the cluster algebras. The category also depends on an underlying ring R, usually the integers, rationals, or reals.
Reading, Nathan
core  

APPLICATION OF THE THEORY OF WAVELETS FOR COMPRESSION AND FILTRATION OF GEOINFORMATION

open access: yesЗаписки Горного института, 2018
The purpose of the article is to develop a detailed and accessible technology for the application of wavelets in the processing of geo-information, the subject of research is wavelet-based filtering and compression of geo-information.
A. S. Yarmolenko, O. V. Skobenko
doaj   +1 more source

New method for solving inductive electric fields in the non-uniformly conducting ionosphere [PDF]

open access: yesAnnales Geophysicae, 2006
We present a new calculation method for solving inductive electric fields in the ionosphere. The time series of the potential part of the ionospheric electric field, together with the Hall and Pedersen conductances serves as the input to this method ...
H. Vanhamäki, O. Amm, A. Viljanen
doaj   +1 more source

A bideterminant basis for a reductive monoid [PDF]

open access: yes, 2010
We use the rational tableaux introduced by Stembridge to give a bideterminant basis for a normal reductive monoid and for its variety of noninvertible elements. We also obtain a bideterminant basis for the full coordinate ring of the general linear group
Tange, Rudolf
core  

Construction of SU(3) irreps in canonical SO(3)-coupled bases

open access: yes, 2007
Alternative canonical methods for defining canonical SO(3)-coupled bases for SU(3) irreps are considered and compared. It is shown that a basis that diagonalizes a particular linear combination of SO(3) invariants in the SU(3) universal enveloping ...
Carvalho J   +5 more
core   +1 more source

Combinatorics of Rooted Trees and Hopf Algebras

open access: yes, 2002
We begin by considering the graded vector space with a basis consisting of rooted trees, graded by the count of non-root vertices. We define two linear operators on this vector space, the growth and pruning operators, which respectively raise and lower ...
Hoffman, Michael E.
core   +4 more sources

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