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Opuscula Analytica - EULER, Leonhard - 1783. 
Two folding engraved plates. 2 p.l., 363 pp.; 2 p.l., 346 pp. Two vols. Large 4to, early 19th-cent. half-sheep & green marbled boards, flat spine gilt, red leather lettering piece on spine. St. Petersburg: Typis Academiae Imperialis Scientiarum, 1783-85. First edition of this collection of 29 mathematical treatises by Euler; the first volume was published in the year of his death. This is a very uncommon book. "Containing important papers on the theory of numbers, including his famous 'Observationes circa Divisionem Quadratorum per Numeros primos', also 'de Criteriis Aequationis fxx + gyy = hzz, utrum ea Resolutionem admittat necne? Considerationes super Theoremate Fermatiano,' etc. etc."-Sotheran, 2nd Supp., 1464. Fine and fresh set from the library of the Dukes of Anhalt with their stamp on verso of each title. ? Keynes, A Treatise on Probability. Bibliography, p. 443.
[Bookseller: Jonathan A. Hill, Bookseller, Inc.]
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