TAILIEUCHUNG - Étude des Élassoïdes ou Surfaces A Courbure Moyenne Nulle, by Albert Ribaucour

Isomerism caused much consternation to early researchers, since isomers have exact the same composition, but differ in configuration (arrangement) of the atoms. For example, there was much speculation for the chemical identity of benzene, until the correct structure was described by Friedrich August Kekulé. Likewise, the idea of stereoisomerism - that atoms have rigid three-dimensional structure and can thus form isomers that differ only in their three-dimensional arrangement - was another crucial step in understanding the concept of distinct chemical substances. For example, tartaric acid has three distinct isomers, a pair of diastereomers with one diastereomer forming two enantiomers | The Project Gutenberg EBook of Étude des Élassoides ou Surfaces A Courbure Moyenne Nulle by Albert Ribaucour This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at Title Etude des Élassoides ou Surfaces A Courbure Moyenne Nulle Author Albert Ribaucour Release Date August 26 2009 EBook 29805 Language French Character set encoding ISO-8859-1 START OF THIS PROJECT GUTENBERG EBOOK ÉTUDE DES ÉLASSOỈDES Produced by Laura Wisewell Andrew D. Hwang and the Online Distributed Proofreading Team at http The original copy of this book was generously made available for scanning by the Department of Mathematics at the University of Glasgow. Notes sur la transcription Les resumes de chapitre des pages 5-7 ne concordent pas avec la division des chapitres du présent livre. Le résumé pour le Chapitre XIX renvoie à des informations non contenues dans ce livre. Les résumés pour les Chapitres XX XXI XXII et XXIII correspondent respectivement aux Chapitres XIX XX XXI et XXII. Des modifications mineures ont été apportées à la présentation l orthographe la ponctuation et aux notations mathématiques. Le fichier LTgX source contient des notes de ces corrections. Ce fichier est optimisée pour imprimer mais peut être aisément reformater pour être lu sur un écran. Veuillez consulter le préambule du fichier LTeX source pour les instructions. ÉTUDE DES ÉLASSOỈDES OU SURFACES A COURBURE MOYENNE NULLE PAR ALBERT RIBAUCOUR INGÉNIEUR DES PONTS ET CHAUSSÉES A Aix bOUCHES-DU-RHÔNE . Couronné par l Académie dans la séance publique du 16 décembre 1880.

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