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MONGE, Gaspard. Géométrie descriptive. Leçons données aux écoles normales, l'An 3 de la république.
[Bound with]
Feuilles d'analyse appliquée à la géométrie à l'usage de l'École Polytechnique. 

Paris, Baudouin, An VII [1799] - An 9 [1801.

Two works bound in one 4to (249x192 mm), vii-(1)-132 pages and 25 plates / (4)-(138) pages.  binding : Contemporary full mottled sheep, gilt flat spine. Caps an little chipped.

Very good copy of two very important warks of Gaspard Monge.
The first is the first edition of the 'Géométrie descriptive. '. Paris, 1799.
First issue with the errata at the verso of page vii.
"Monge is regarded as the creator of descriptive geometry, for 'it ws he who elegantly and methodically converted the group of graphical procedures used by practionners into a general uniform technique based on simple an rigorous reasoning and methods ...Monge's systematic use of cylindrical projection and, more discreetly, that of central projection, opened the way to the parallel creation of projective and modern geometry' (DSB). It was primarily through Monge's teachings, both at the ephemeral École de l'an III and the École Polytechnique, that descriptive geometry, analytical geometry and differential geometry were established as special fields".(Norman)

The second work is the second edition of the: "Feuilles d'analyse appliquée à la géométrie à l'usage de l'École Polytechnique. Pairs. 1801".
The first edition appeared in 1795 as simple leaves given to the students.
In this work, Monge "assembled, along with general considerations regarding the theory of surfaces and the geometric interpretation of partial differential equations, monographs on about twenty families of surfaces defined by their mode of generation." (DSB [IX p. 476]).

references: Norman [Géométrie descriptive, 1536 : ""The true creator of descriptive geometry".], En français dans le texte [Géométrie descriptive, 202 : La géométrie descriptive est l'oeuvre la plus connue du grand public. C'est une méthode de représentation des points de l'espace sur un surface plane par double projection sur un plan horizontal qui est ensuite rabattu sur le plan de l'épure... Cette technique a été le principe de tout le dessin industriel et dessin des machnies au XIXe siècle"], DSB [Feuilles analyse, IX p.476].

Price : 2500 €

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