Search Results - "Mello, Luis Fernando"

Do isotropic tidal forces imply isotropic cosmic expansion? by Dias, Fabio Scalco, Gomes, Leandro Gustavo, Mello, Luis Fernando

“…We investigate the dynamics of the spatially flat universes submitted to isotropic tidal forces and adiabatic expansion under Einstein’s equations…”
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Control of planar Bautin bifurcation by de Carvalho Braga, Denis, Fernando Mello, Luis, Rocşoreanu, Carmen, Sterpu, Mihaela

“…On a versal deformation of the Bautin bifurcation it is possible to find dynamical systems that undergo Hopf or non-hyperbolic limit cycle bifurcations. Our…”
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Transcritical bifurcation at infinity in planar piecewise polynomial differential systems with two zones by de Carvalho Braga, Denis, Llibre, Jaume, Fernando Mello, Luis

“…We present a general mechanism of generation of limit cycles in planar piecewise polynomial differential systems with two zones by means of a transcritical…”
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Modeling dynamics and alternative treatment strategies in acute promyelocytic leukemia by Yoshinari, Jr, Gerson Hiroshi, Fassoni, Artur César, Mello, Luis Fernando, Rego, Eduardo M

“…Acute Promyelocytic Leukemia (APL) is a rare and potentially lethal condition in which risk-based therapy often leads to better outcomes. Because of its rarity…”
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New central configurations of the (n+1)-body problem by Fernandes, Antonio Carlos, Garcia, Braulio Augusto, Llibre, Jaume, Mello, Luis Fernando

“…In this article we study central configurations of the (n+1)-body problem. For the planar (n+1)-body problem we study central configurations performed by n≥2…”
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Arbitrary number of limit cycles for planar discontinuous piecewise linear differential systems with two zones by Denis de Carvalho Braga, Luis Fernando Mello

“…For any given positive integer $n$ we show the existence of a class of discontinuous piecewise linear differential systems with two zones in the plane having…”
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New stacked central configurations for the planar 5-body problem by Llibre, Jaume, Mello, Luis Fernando, Perez-Chavela, Ernesto

“…A stacked central configuration in the n -body problem is one that has a proper subset of the n -bodies forming a central configuration. In this paper we study…”
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Hopf bifurcations and small amplitude limit cycles in Rucklidge systems by Fabio Scalco Dias, Luis Fernando Mello

“…In this article we study Hopf bifurcations and small amplitude limit cycles in a family of quadratic systems in the three dimensional space called Rucklidge…”
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New classes of spatial central configurations for the 7-body problem by FERNANDES, ANTONIO CARLOS, MELLO, LUIS FERNANDO

“…In this paper we show the existence of new families of spatial central configurations for the 7-body problem. In the studied spatial central configurations,…”
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Controllable Hopf bifurcations of codimension 1 and 2 in nonlinear control systems by Braga, Denis de Carvalho, Mello, Luis Fernando, Rocşoreanu, Carmen, Sterpu, Mihaela

“…The purpose of this work, given a nonlinear control system, is to design a four-parameter family of static state feedback such that the corresponding…”
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Analysis of a quadratic system obtained from a scalar third order differential equation by Fabio Scalco Dias, Luis Fernando Mello

“…In this article, we study the nonlinear dynamics of a quadratic system in the three dimensional space which can be obtained from a scalar third order…”
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Nonhyperbolic Periodic Orbits of Vector Fields in the Plane Revisited by Braga, Denis de Carvalho, Zambroni de Souza, Antonio Carlos, Mello, Luis Fernando

“…The main goal of this paper is to present a theory of approximation of periodic orbits of vector fields in the plane. From the theory developed here, it is…”
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The matching of two Markus-Yamabe piecewise smooth systems in the plane by Braga, Denis de Carvalho, Dias, Fabio Scalco, Llibre, Jaume, Mello, Luis Fernando

“…A Markus-Yamabe vector field is a smooth vector field in Rn having only one equilibrium point and such that the spectrum of its Jacobian matrix at any point of…”
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Kukles Systems of Degree Three with Global Centers by Dias, Fabio Scalco, Mello, Luis Fernando, Valls, Claudia

“…A global center of a vector field in the plane is an equilibrium point such that the whole plane with the exception of the equilibrium point is filled with…”
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Convex Central Configurations of the 4-Body Problem with Two Pairs of Equal Adjacent Masses by Fernandes, Antonio Carlos, Llibre, Jaume, Mello, Luis Fernando

“…We study the convex central configurations of the 4-body problem assuming that they have two pairs of equal masses located at two adjacent vertices of a convex…”
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Limit cycles in a family of discontinuous piecewise linear differential systems with two zones in the plane by de Carvalho Braga, Denis, Mello, Luis Fernando

“…In this paper we study the existence of limit cycles in a one-parameter family of discontinuous piecewise linear differential systems with two zones in the…”
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Polynomial Vector Fields on Algebraic Surfaces of Revolution by Dias, Fabio Scalco, Mello, Luis Fernando

“…In the first part of the article we study polynomial vector fields of arbitrary degree in R 3 having an algebraic surface of revolution invariant by their…”
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Globally Asymptotically Stable Equilibrium Points in Kukles Systems by Dias, Fabio Scalco, Mello, Luis Fernando

“…The problem of determining the basin of attraction of equilibrium points is of great importance for applications of stability theory. In this article, we…”
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Global Phase Portraits of Ordinary Differential Equations Modeling the Acute Promyelocytic Leukemia by Candido, Douglas Modesto, Dias, Fabio Scalco, Mello, Luis Fernando

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Exemplos de configurações centrais planares encaixantes by Antonio Carlos Fernandes, Luis Fernando Mello, Malú Maira da Silva

“…Neste artigo estudamos configurações centrais planares encaixantes para o problema de n corpos em mecânica celeste quando n = 4, n = 8 e n = 12. Determinamos…”
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