2 citations · 3 across the 4 of their papers we have counts for
Showing math.CAShow all
2 papers · 1 filter
math.CA2023★ 1 cited
Turrittin's Theorem revisited. The real case
Moulay Barkatou, Félix Álvaro Carnicero-Martín, Fernando Sanz Sánchez
We establish a real version of Turrittin's result on polynomial and formal normal forms of linear systems of ODEs with meromorphic coefficients. Both the normal forms or the transf…
math.CA2017
Uniqueness of Limit Cycles for Quadratic Vector Fields
José Luis Bravo, Manuel Fernández, Ignacio Ojeda +1
This article deals with the study of the number of limit cycles surrounding a critical point of a quadratic planar vector field, which, in normal form, can be written as $x'= a_1 x…