‎KOENIGS (G.)‎
‎La géométrie réglée et ses applications. Coordonnées, systèmes linéaires, propriétés infinitésimales du premier ordre -- EDITION ORIGINALE‎

‎P., Gauthier-Villars, 1895, un volume in 4, relié en demi-toile noire (reliure de l'époque), (épidermures au dos),(2), 148pp.‎

Reference : 2928

‎---- EDITION ORIGINALE ---- "After achieving a brilliant scholarly record, first at Toulouse and then in Paris at the Ecole Normale Supérieure, Koenigs passes the examination for the agrégation in 1882 and in the same year defended his doctoral thesis Les propriétés infinitésimales de l'espace réglé ... A disciple of Darboux, Koenigs directed his first investigations toward questions in infinitesimal geometry, especially, following Plucker and F. Klein, toward the study of the different configurations formed by straight lines... In analysis he was one of the first to take an interest in iteration theory conceived locally...". (DSB VII p. 446) - Cajori**2928/N5AR‎