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Numerical prediction of three-dimensional time-dependent viscoelastic extrudate swell using differential and algebraic models
(PERGAMON-ELSEVIER SCIENCE LTD, 2011)
This study investigates the numerical simulation of three-dimensional time-dependent viscoelastic free surface flows using the Upper-Convected Maxwell (UCM) constitutive equation and an algebraic explicit model. This ...
Estructuras Killing-Yano invariantes en variedades homogéneas
(2018-03)
Estudiamos 2-formas de Killing-Yano invariantes a izquierda sobre grupos de Lie, o equivalentemente, sobre álgebras de Lie. Más particularmente, clasificamos las álgebras de Lie de dimensión 4 que admitan tales estructuras, ...
Post-Lie algebras and isospectral flows
(National Academy of Sciences of UkraineKyiv, 2015)
In this paper we explore the Lie enveloping algebra of a post-Lie algebra derived from a classical R-matrix. An explicit exponential solution of the corresponding Lie bracket flow is presented. It is based on the solution ...
Differential equations associated to algebraic functions and their solutions
(Universidad Nacuional de Colombia; Sociedad Colombiana de matemáticas, 1996)
A method to find the general solution of algebraic equations, including the quintic, is presented. The procedure is essentially based on the analytical properties of the algebraic functions and leads to the solution of ...
A decision method for the integrability of differential-algebraic Pfaffian systems
(Academic Press Inc Elsevier Science, 2016-01)
We prove an effective integrability criterion for differential-algebraic Pfaffian systems leading to a decision method of consistency with a triple exponential complexity bound. As a byproduct, we obtain an upper bound for ...
Modelos descritos por equações diferenciais ordinárias
(Universidade Estadual Paulista (UNESP), 2014)