76 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidade Federal do Rio de JaneiroBR6 papers
- Universidade Federal do Rio GrandeBR6 papers
- Universidade Federal do Rio Grande do SulBR4 papers
- Brazilian Society of Computational and Applied MathematicsBR3 papers
- Centre National de la Recherche ScientifiqueFR3 papers
- Universidade de São PauloBR3 papers
- Hospital Ana NeryBR2 papers
- Institut de recherche mathématique de RennesFR2 papers
- Laboratoire de Mathématiques Blaise PascalFR2 papers
- Laboratoire de Mathématiques Nicolas OresmeFR2 papers
- National Nuclear Energy CommissionBR2 papers
- Normandie UniversitéFR2 papers
33 papers
Galaxy interactions in void substructures: Morphology and stellar populations of two triplets from CAVITY
G. M. Azevedo, A. L. Chies-Santos, R. Riffel +5
Context. Cosmic voids are underdense regions of the Universe that provide a unique environment to study galaxy evolution in relative isolation. Galaxy triplets in voids are rare sy…
Droplet rebounds off a fluid bath at low Weber numbers
Elvis A. Agüero, Carlos A. Galeano-Rios, Clodoaldo Ragazzo +3
We present a method to simulate non-coalescing impacts and rebounds of droplets onto the free surface of a liquid bath, together with new experimental data, focused on the low-spee…
Nonparametric estimation of the jump rate in mean field interacting systems of neurons
Aline Duarte, Kadmo Laxa, Eva Löcherbach +1
We consider finite systems of interacting neurons described by non-linear Hawkes processes in a mean field frame. Neurons are described by their membrane potential. They spike…
Hitchin fibration under ramified coverings
Thiago Fassarella, Frank Loray
We are interested in studying the variation of the Hitchin fibration in moduli spaces of parabolic Higgs bundles, under the action of a ramified covering. Given a degree two map $π…
Spontaneous stochasticity and renormalization group in discrete multi-scale dynamics
Alexei A. Mailybaev, Artem Raibekas
We introduce a class of multi-scale systems with discrete time, motivated by the problem of inviscid limit in fluid dynamics in the presence of small-scale noise. These systems are…
The Category of Hypergroups: seeking for a generalized version of Abelian Categories
Kaique Matias de Andrade Roberto, Ana Luiza Tenório
In this paper we study categorical properties of the category of abelian hypergroups that leads to the notion of hyper (almost) preadditive and hyper (almost) abelian categories. O…
Crystallographic groups and flat manifolds from surface braid groups
Daciberg Lima Gonçalves, John Guaschi, Oscar Ocampo +1
Let be a compact surface without boundary, and . We analyse the quotient group of the surface braid group by the commutator subgroup $Γ…
The Borsuk-Ulam property for homotopy classes of maps between the torus and the Klein bottle -- part 2
Daciberg Lima Gonçalves, John Guaschi, Vinicius Casteluber Laass
Let be a topological space that admits a free involution , and let be a topological space. A homotopy class is said to have the Borsuk-Ulam property with…
Typical coexistence of infinitely many strange attractors
Pablo G. Barrientos, Juan David Rojas
We prove that the coexistence of infinitely many prevalent Hénon-like phenomena is Kolmogorov typical in sectional dissipative -Berger domains of parameter families of dif…
There exist transitive piecewise smooth vector fields on but not robustly transitive
Rodrigo D Euzébio, Joaby S. Jucá, Régis Varão
It is well known that smooth (or continuous) vector fields cannot be topologically transitive on the sphere . Piecewise-smooth vector fields, on the other hand, may present no…
Energy estimates and convergence of weak solutions of the porous medium equation
Renato De Paula, Patrícia Gonçalves, Adriana Neumann
We study the convergence of the weak solution of the porous medium equation with a type of Robin boundary conditions, by tuning a parameter either to zero or to infinity. The conve…
An iterative process for approximating subactions
Hermes H. Ferreira, Artur O. Lopes, Elismar R. Oliveira
We describe a procedure based on the iteration of an initial function by an appropriated operator, acting on continuous functions, in order to get a fixed point. This fixed point w…
A strong invariance principle for the elephant random walk
Cristian F. Coletti, Renato Gava, Gunter M. Schütz
We consider a non-Markovian discrete-time random walk on with unbounded memory called the elephant random walk (ERW). We prove a strong invariance principle for the ER…
Robust tangencies of large codimension
Pablo G. Barrientos, Artem Raibekas
We construct -robust homoclinic and heterodimensional tangencies of large codimension inside transitive partially hyperbolic sets.
Oscillations in the Tsallis income distribution
Everton M. C. Abreu, Newton J. Moura, Abner D. Soares +1
Oscillations in the complementary cumulative distribution function (CCDF) of individual income data have been found in the data of various countries studied by different authors at…
From an Action Principle for Action-dependent Lagrangians toward non-conservative Gravity: accelerating Universe without dark energy
Matheus J. Lazo, Juilson Paiva, João T. S. Amaral +1
In the present work, we propose an Action Principle for Action-dependent Lagrangians by generalizing the Herglotz variational problem for several independent variables. This Action…
On prime factors of Mersenne numbers
Ady Cambraia, Michael P. Knapp, Abílio Lemos +2
Let be the Mersenne sequence defined by . Let be the number of distinct prime divisors of In this short note, we present a description of th…
Tsallis statistics in the income distribution of Brazil
Abner D. Soares, Newton J. Moura, Marcelo B. Ribeiro
This paper discusses the empirical evidence of Tsallis statistical functions in the personal income distribution of Brazil. Yearly samples from 1978 to 2014 were linearized by the…
The benchmark black hole in NGC 4258: dynamical models from high-resolution two-dimensional stellar kinematics
Daniel Alf Drehmer, Thaisa Storchi Bergmann, Fabricio Ferrari +2
NGC 4258 is the galaxy with the most accurate (maser-based) determination for the mass of the supermassive black hole (SMBH) in its nucleus. In this work we present a two-dimension…
The action principle for dissipative systems
Matheus J. Lazo, Cesar E. Krumreich
In the present work we redefine and generalize the action principle for dissipative systems proposed by Riewe by fixing the mathematical inconsistencies present in the original app…
Characterization of the stability of chains associated with -measures
Christophe Gallesco, Sandro Gallo, Daniel Yasumasa Takahashi
In this paper we introduce a notion of asymptotic stability of a probability kernel, which we call dynamic uniqueness. We say that a kernel exhibits dynamic uniqueness if all the s…
Dynamical systems with heavy-tailed random parameters
Vladimir Belitsky, Mikhail Menshikov, Dimitri Petritis +1
Motivated by the study of the time evolution of random dynamical systems arising in a vast variety of domains --- ranging from physics to ecology ---, we establish conditions for t…
Testing the Goodwin growth-cycle macroeconomic dynamics in Brazil
N. J. Moura, Marcelo B. Ribeiro
This paper discusses the empirical validity of Goodwin's (1967) macroeconomic model of growth with cycles by assuming that the individual income distribution of the Brazilian socie…
The DuBois-Reymond Fundamental Lemma of the Fractional Calculus of Variations and an Euler-Lagrange Equation Involving only Derivatives of Caputo
Matheus J. Lazo, Delfim F. M. Torres
Derivatives and integrals of non-integer order were introduced more than three centuries ago, but only recently gained more attention due to their application on nonlocal phenomena…