Euler, Leonhard. Methodus inveniendi lineas curvas maximi minimive proprietate gaudentes. Losanna e Ginevra, Bousquet, 1744.
In quarto (247 x 180 mm); [2], 322, [2] pagine. Frontespizio stampato in rosso e nero con una vignetta, 5 tavole ripiegate incise in rame (lievi e per lo più uniformi arrossature e qualche fioritura.) Legatura coeva in bazzana marrone, dorso a 5 nervi con fregi e titolo in oro (sciupata, cerniere usate).
Norman 731: “With the publication of this work, the calculus of variations came into being as a new branch of mathematics. Euler was the first to formulate the principal problems of the calculus of variations and to create general methods for their solution.”
Rare first edition of the first treatise on the calculus of variations