Cette �dition r�unit trois textes cl�s: un trait� sur les propri�t�s communes � toutes les courbes, un m�moire consacr� aux �clipses de soleil et un travail sur les usages de l’ellipse dans la trigonom�trie sph�rique.

R�dig� pour servir les g�om�tres et les savants, cet ensemble met en lumi�re des formules et des m�thodes utiles pour transformer et relier des coordonn�es, des rayons et des angles. Le volume s’adresse � ceux qui veulent comprendre des id�es fondamentales sans entrer dans des d�monstrations lourdes, tout en offrant des outils r�utilisables dans la pratique.

Un cadre conceptuel sur la relation entre coordonn�es et courbes, utile pour l’analyse et l’application g�om�trique.
Des explorations sur les �clipses de soleil et les mesures associ�es, pr�sent�es avec pr�cision historique.
Des expressions et m�thodes li�es � l’ellipse et � la trigonom�trie sph�rique, utiles pour des calculs et des mod�lisations.

Id�al pour les lecteurs int�ress�s par l’histoire des math�matiques, la g�om�trie et les applications anciennes des courbes et des ellipses.

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