Results 41 to 50 of about 52,649 (219)

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

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

On the algebraic numbers computable by some generalized Ehrenfest urns [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2012
This article deals with some stochastic population protocols, motivated by theoretical aspects of distributed computing. We modelize the problem by a large urn of black and white balls from which at every time unit a fixed number of balls are drawn and ...
Marie Albenque, Lucas Gerin
doaj   +1 more source

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

On the approximation to algebraic numbers by algebraic numbers

open access: yesGlasnik matematički, 2009
Let n be a positive integer. Let ξ be an algebraic real number of degree greater than n. It follows from a deep result of W. M. Schmidt that, for every positive real number ε, there are infinitely many algebraic numbers α of degree at most n such that |ξ - α| < H(α)-n - 1 + ε, where H(α) denotes the naive height of α.
openaire   +3 more sources

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

Counting rational points on algebraic varieties [PDF]

open access: yes, 2006
For any N ≥ 2, let Z ⊂ ℙN be a geometrically integral algebraic variety of degree d. This article is concerned with the number Nz(B) of ℚ-rational points on Z which have height at most B. For any ε > 0, we establish the estimate NZ(B) = O d,ε,N(Bdim Z+ε),
Heath-Brown, D. R.   +9 more
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

Algebraic Properties of Chromatic Polynomials and Their Roots [PDF]

open access: yes, 2015
In this thesis we examine chromatic polynomials from the viewpoint of algebraic number theory. We relate algebraic properties of chromatic polynomials of graphs to structural properties of those graphs for some simple families of graphs.
Gilmore, Hamish Julian
core  

Lower bounds for the normalized height and non-dense subsets of varieties in an abelian variety [PDF]

open access: yes, 2010
This work is the third part of a series of papers. In the first two we considered curves and varieties in a power of an elliptic curve. Here we deal with subvarieties of an abelian variety in general.
Viada, Evelina
core   +1 more source

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