Results 61 to 70 of about 2,550,362 (221)

Dual Numbers and Operational Umbral Methods

open access: yesAxioms, 2019
Dual numbers and their higher-order version are important tools for numerical computations, and in particular for finite difference calculus. Based on the relevant algebraic rules and matrix realizations of dual numbers, we present a novel point of view,
Nicolas Behr   +3 more
doaj   +1 more source

Splitting full matrix algebras over algebraic number fields

open access: yesJournal of Algebra, 2012
Let K be an algebraic number field of degree d and discriminant D over Q. Let A be an associative algebra over K given by structure constants such that A is isomorphic to the algebra M_n(K) of n by n matrices over K for some positive integer n. Suppose that d, n and D are bounded.
Ivanyos, Gábor   +2 more
openaire   +2 more sources

Counting Perron Numbers by Absolute Value [PDF]

open access: yes, 2015
We count various classes of algebraic integers of fixed degree by their largest absolute value. The classes of integers considered include all algebraic integers, Perron numbers, totally real integers, and totally complex integers.
Calegari, Frank, Huang, Zili
core  

Constructing Odd-Variable Rotation Symmetric Boolean Functions With Optimal AI and Higher Nonlinearity

open access: yesIEEE Access, 2019
As a part of the field of cryptography, rotation symmetric Boolean functions have rich cryptographic significance. In this paper, based on the knowledge of integer compositions, we present a new construction of odd-variable rotation symmetric Boolean ...
Yindong Chen   +3 more
doaj   +1 more source

Schanuel's Conjecture and Algebraic Roots of Exponential Polynomials [PDF]

open access: yes, 2009
In this paper we prove that assuming Schanuel's conjecture, an exponential polynomial in one variable over the algebraic numbers has only finitely many algebraic solutions.
Shkop, Ahuva C.
core  

On two notions of complexity of algebraic numbers

open access: yes, 2007
we derive new, improved lower bounds for the block complexity of an irrational algebraic number and for the number of digit changes in the b-ary expansion of an irrational algebraic number.
Bugeaud, Yann, Evertse, Jan-Hendrik
core   +2 more sources

Colour by Numbers: Solving Algebraic Equations Without Algebra

open access: yesSpreadsheets in Education, 2005
A series of Excel models is described. They allow solution of f(x) = 0 by examining change of sign of function values. The function is graphed and change of sign easily detected by a change of colour. Prominent Excel features used are Names, Chart Wizard
Stephen J. Sugden
doaj  

Most General Algebraic Specifications for an Abstract Datatype of Rational Numbers

open access: yesScientific Annals of Computer Science, 2020
The notion of a most general algebraic specification of an arithmetical datatype of characteristic zero is introduced. Three examples of such specifications are given. A preference is formulated for a specification by means of infinitely many equations
Jan A. Bergstra
doaj   +1 more source

Perturbation Methods for Acoustic Systems with Interval Parameters

open access: yesArchives of Acoustics, 2008
The aim of the paper is to present a new algebraic system with strictly defined new interval numbers and specifically defined addition and multiplication operations.
Jerzy SKRZYPCZYK
doaj  

On algebraic approximations of certain algebraic numbers

open access: yesJournal of Number Theory, 2003
The main result of the present paper consists of an effective improvement on Liouville's bound for the approximations by rational numbers to algebraic numbers of a special type. Namely, the author considers \(n\)-th roots of imaginary quadratic irrationals.
openaire   +1 more source

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