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math.AP2014★ 1 cited
Formal Solutions of a Class of Pfaffian Systems in Two Variables
Moulay Barkatou, Suzy S. Maddah, Hassan Abbas
In this paper, we present an algorithm which computes a fundamental matrix of formal solutions of completely integrable Pfaffian systems with normal crossings in two variables, bas…
math.CA2014★ 1 cited
On the Reduction of Singularly-Perturbed Linear Differential Systems
Moulay Barkatou, Suzy S. Maddah, Hassan Abbas
In this article, we recover singularly-perturbed linear differential systems from their turning points and reduce the rank of the singularity in the parameter to its minimal intege…