Results 11 to 20 of about 2,524,566 (357)

Quadratic systems with a symmetrical solution

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2018
In this paper we study the existence and uniqueness of limit cycles for so-called quadratic systems with a symmetrical solution: \begin{equation*} \begin{split} \frac{dx(t)}{dt}& = P_2(x,y) \equiv a_{00}+a_{10}x+a_{01}y+a_{20}x^2+a_{11}xy+a_{02}y^2 ...
Andre Zegeling, Robert Kooij
doaj   +1 more source

Application of Said Ball Curve for Solving Fractional Differential-Algebraic Equations

open access: yesMathematics, 2021
The aim of this paper is to apply the Said Ball curve (SBC) to find the approximate solution of fractional differential-algebraic equations (FDAEs). This method can be applied to solve various types of fractional order differential equations. Convergence
Fateme Ghomanjani, Samad Noeiaghdam
doaj   +1 more source

Limit Cycles for Discontinuous Planar Piecewise Linear Differential Systems Separated by an Algebraic Curve

open access: yesInternational Journal of Bifurcation and Chaos in Applied Sciences and Engineering, 2019
We study how to change the maximum number of limit cycles of the discontinuous piecewise linear differential systems with only two pieces in function of the degree of the discontinuity of the algebraic curve between the two linear differential systems ...
J. Llibre, Xiang Zhang
semanticscholar   +1 more source

Linear algebra algorithms for divisors on an algebraic curve [PDF]

open access: yesMathematics of Computation, 2001
We use an embedding of the symmetric dth power of any algebraic curve C of genus g into a Grassmannian space to give algorithms for working with divisors on C, using only linear algebra in vector spaces of dimension O(g), and matrices of size O(g2) × O(g)
Kamal Khuri-Makdisi
semanticscholar   +1 more source

Real plane algebraic curves [PDF]

open access: yesExpositiones Mathematicae, 2002
This paper provides an elementary exposition of affine and projective real plane curves. Where possible, elementary proofs are given, but to some extent, one must make use of results from algebraic geometry (over the complex numbers) and real algebraic geometry.
openaire   +2 more sources

The AdS4/CFT3 algebraic curve [PDF]

open access: yes, 2008
We present the OSp(2, 2|6) symmetric algebraic curve for the AdS4/CFT3 duality recently proposed in arXiv:0806.1218. It encodes all classical string solutions at strong t'Hooft coupling and the full two loop spectrum of long single trace gauge invariant ...
N. Gromov, P. Vieira
semanticscholar   +1 more source

On the growth of mth derivatives of algebraic polynomials in the weighted Lebesgue space

open access: yesApplied Mathematics in Science and Engineering, 2022
In this paper, we study the growth of the mth derivative of an arbitrary algebraic polynomial in bounded and unbounded general domains of the complex plane in weighted Lebesgue spaces.
F. G. Abdullayev, M. Imashkyzy
doaj   +1 more source

Algebraic relations among Goss’s zeta values on elliptic curves

open access: yesForum of Mathematics, Sigma, 2023
In 2007 Chang and Yu determined all the algebraic relations among Goss’s zeta values for $A=\mathbb F_q[\theta ]$ , also known as the Carlitz zeta values.
Nathan Green, Tuan Ngo Dac
doaj   +1 more source

An Algorithm for Isolating the Real Solutions of Piecewise Algebraic Curves

open access: yesJournal of Applied Mathematics, 2011
The piecewise algebraic curve, as the set of zeros of a bivariate spline function, is a generalization of the classical algebraic curve. In this paper, an algorithm is presented to compute the real solutions of two piecewise algebraic curves.
Jinming Wu, Xiaolei Zhang
doaj   +1 more source

Semiclassical spectrum for BMN string in Sch 5 × S 5

open access: yesJournal of High Energy Physics, 2017
We investigate the algebraic curve for string in Sch 5 × S 5. We compute the semiclassical spectrum for BMN string in Sch 5 × S 5 from the algebraic curve.
Hao Ouyang
doaj   +1 more source

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