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Donald L. Winkelmann portrait
(CIMMYT, 2019)
Mujeres de otros
(Universidad de LimaPerú, 2015)
Phase portraits of abel quadratic differential systems of second kind with symmetries
(Dynamical Systems An International Journal, 2020)
Phase portraits of abel quadratic differential systems of second kind with symmetries
(Dynamical Systems An International Journal, 2020)
THE MATERIAL DIMENSIONS OF PHOTOGRAPHY: MATERIAL CULTURE AND FAMILY PORTRAITS
(Univ Estadual Paulista Julio Mesquita Filho, Fac Ciencias Humanas & Sociais, 2016-09-01)
This paper reflects theoretically about photography beyond the visual discourse, calling attention to its materiality. It delimits the so-called family portraits, images that represent different dimensions of family memory, ...
PHASE PORTRAITS OF BERNOULLI QUADRATIC POLYNOMIAL DIFFERENTIAL SYSTEMS
(Texas State Univ, 2020-05-22)
In this article we study a new class of quadratic polynomial differential systems. We classify all global phase portraits in the Poincare disk of Bernoulli quadratic polynomial differential systems in R-2.
Phase portraits of the quadratic polynomial Liénard differential systems
(2020-01-01)
We classify the global phase portraits in the Poincaré disc of the quadratic polynomial Liénard differential systems where (x, y) ϵR 2 are the variables and a,b,c,d,e are real parameters.
Phase portraits of (2;0) reversible vector fields with symmetrical singularities
(2021-11-15)
In this paper we study the phase portraits in the Poincaré disk of the reversible vector fields of type (2;0) having generic bifurcations around a symmetric singular point p. We also prove the nonexistence of any periodic ...