Beschreibung:

EULER, Leonhard (1707-1783). Opuscula Analytica. St. Petersburg: Academia Imperialis Scientiarum, 1783-1785. Rare first edition of this collection of 28 previously unpublished mathematical papers by Euler, the majority of which deal with topics in number theory. The most important is ‘Observationes circa divisionem quadratorum per numeros primos’, read at the St. Petersburg Academy in 1772, which gives the first clear statement of the ‘law of quadratic reciprocity’ called the ‘golden theorem’ by Gauss who gave its first proof in his Disquisitiones Arithmeticae (1801). RBH/ABPC record no other complete copy at auction. 2 volumes, large quarto (252 x 200mm). 2 folding engraved plates (some light dampstaining). Contemporary mottled calf with supralibros of Collége Royal de Henri IV to sides (some light wear to extremities and a 6cm crack to the front hinge of vol. II).