Results 41 to 50 of about 599,194 (182)

Visual and Symbolic Representations as Components of Algebraic Reasoning

open access: yesJournal of Numerical Cognition, 2023
Sixty (35 girls) ninth graders were assessed on measures of algebraic reasoning and usage of visual and symbolic representations (with a prompt for visual use) to solve equations and inequalities.
Zehra E. Ünal   +4 more
doaj   +1 more source

The dual fuzzy matrix equations: Extended solution, algebraic solution and solution

open access: yesAIMS Mathematics, 2023
In this paper, we propose a direct method to solve the dual fuzzy matrix equation of the form $ \mathbf{A}\widetilde{\mathbf{X}}+\widetilde{\mathbf{B}} = \mathbf{C}\widetilde{\mathbf{X}}+\widetilde{\mathbf{D}} $ with $ \mathbf{A} $, $ \mathbf{C ...
Zengtai Gong , Jun Wu, Kun Liu
doaj   +1 more source

The number of connected components of certain real algebraic curves

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
For an integer n≥2, let p(z)=∏k=1n(z−αk) and q(z)=∏k=1n(z−βk), where αk,βk are real. We find the number of connected components of the real algebraic curve {(x,y)∈ℝ2:|p(x+iy)|−|q(x+iy)|=0} for some αk and βk.
Seon-Hong Kim
doaj   +1 more source

Gr\"obner Bases over Algebraic Number Fields

open access: yes, 2015
Although Buchberger's algorithm, in theory, allows us to compute Gr\"obner bases over any field, in practice, however, the computational efficiency depends on the arithmetic of the ground field.
Boku, Dereje Kifle   +3 more
core   +1 more source

An Example of Two-Fold Fuzzy Algebras Based On Neutrosophic Real Numbers [PDF]

open access: yesNeutrosophic Sets and Systems
This paper is dedicated to defining and studying for the first time a two-fold algebra over the neutrosophic real number ring by merging the fuzzy set mapping with the algebraic operations of the neutrosophic real number ring.
Abdallah Shihadeh   +5 more
doaj   +1 more source

Effective Irrationality Measures and Approximation by Algebraic Conjugates

open access: yes, 2010
In this paper, we present a result on using algebraic conjugates to form a sequence of approximations to an algebraic number, and in this way obtain effective irrationality measures for related algebraic numbers.
Voutier, Paul
core   +1 more source

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

An Upper Bound of the Bezout Number for Piecewise Algebraic Curves over a Rectangular Partition

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2012
A piecewise algebraic curve is a curve defined by the zero set of a bivariate spline function. Given two bivariate spline spaces (Δ) over a domain D with a partition Δ, the Bezout number BN(m,r;n,t;Δ) is defined as the maximum finite number of the ...
Feng-Gong Lang, Xiao-Ping Xu
doaj   +1 more source

Q_l-cohomology projective planes and singular Enriques surfaces in characteristic two [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2019
We classify singular Enriques surfaces in characteristic two supporting a rank nine configuration of smooth rational curves. They come in one-dimensional families defined over the prime field, paralleling the situation in other characteristics, but ...
Matthias Schütt
doaj   +1 more source

An improved peak-selection algorithm using block-based recurrence Cholesky decomposition for mesh deformation

open access: yesAIP Advances, 2021
An improved peak-selection algorithm is proposed for mesh deformation. With the use of the newly derived block-based recurrence Cholesky (BRC) decomposition scheme, the computational complexity for solving the linear algebraic system in the data reducing
Jing Liu   +4 more
doaj   +1 more source

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