Results 1 to 10 of about 81,984 (133)

On a class of invariant algebraic curves for Kukles systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper we give a new upper bound for the degree of a class of transversal to infinity invariant algebraic curves for polynomial Kukles systems of arbitrary degree.
Osvaldo Osuna   +2 more
doaj   +2 more sources

Invariant Algebraic Curves of Generalized Liénard Polynomial Differential Systems

open access: yesMathematics, 2022
In this study, we focus on invariant algebraic curves of generalized Liénard polynomial differential systems x′=y, y′=−fm(x)y−gn(x), where the degrees of the polynomials f and g are m and n, respectively, and we correct some results previously stated.
Jaume Giné, Jaume Llibre
doaj   +1 more source

Algebraic Multiplicity and the Poincaré Problem [PDF]

open access: yes, 2023
In this paper we derive an upper bound for the degree of the strict invariant algebraic curve of a polynomial system in the complex project plane under generic condition.
Jinzhi Lei, Lijun Yang
semanticscholar   +1 more source

On Control Polygons of Planar Sextic Pythagorean Hodograph Curves

open access: yesMathematics, 2023
In this paper, we analyze planar parametric sextic curves to determine conditions for Pythagorean hodograph (PH) curves. By expressing the curves to be analyzed in the complex form, the analysis is conducted in algebraic form.
Yujun Li   +3 more
doaj   +1 more source

The method of Puiseux series and invariant algebraic curves [PDF]

open access: yesCommunications in Contemporary Mathematics, 2018
An explicit expression for the cofactor related to an irreducible invariant algebraic curve of a polynomial dynamical system in the plane is derived.
M. Demina
semanticscholar   +1 more source

Geometry, integrability and bifurcation diagrams of a family of quadratic differential systems as application of the Darboux theory of integrability

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2021
During the last forty years the theory of integrability of Darboux, in terms of algebraic invariant curves of polynomial systems has been very much extended and it is now an active area of research.
Regilene Oliveira   +3 more
doaj   +1 more source

Non-algebraic limit cycles in Holling type III zooplankton-phytoplankton models

open access: yesCubo, 2021
We prove that for certain polynomial differential equations in the plane arising from predator-prey type III models with generalized rational functional response, any algebraic solution should be a rational function. As a consequence, limit cycles, which
Homero G. Díaz-Marín, Osvaldo Osuna
doaj   +1 more source

Center conditions for a cubic system with two homogeneous invariant straight lines and exponential factors

open access: yesActa et Commentationes: Ştiinţe Exacte şi ale Naturii, 2023
In this paper for a cubic differential system with a singular point
Dumitru Cozma
doaj   +1 more source

Interactive oracle proofs of proximity to algebraic geometry codes [PDF]

open access: yesElectron. Colloquium Comput. Complex., 2020
In this work, we initiate the study of proximity testing to Algebraic Geometry (AG) codes. An AG code C = C(X, P, D) over an algebraic curve X is a vector space associated to evaluations on P ⊆ X of functions in the Riemann-Roch space LX (D). The problem
Sarah Bordage   +3 more
semanticscholar   +1 more source

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

Home - About - Disclaimer - Privacy