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math.HO2018
The diameter and the Traversale : inside Girard Desargues' workshop
Marie Anglade, Jean-Yves Briend
In his \textit{Brouillon Project} on conic sections, Girard Desargues studies the notion of \textit{traversale}, which generalizes that of diameter introduced by Apollonius. One of…
math.HO2018★ 5 cited
L'usage de la combinatoire chez Girard Desargues : le cas du théorème de Ménélaüs
Jean-Yves Briend, Marie Anglade
We show in this article how Girard Desargues, in his well known text on conics, the \textit{Brouillon Project,} manages to use Menelaos' theorem with some awesome virtuosity. To th…