Beschreibung:

D'Alembert Jean le Rond. Opuscules mathématiques, ou Mémoires sur différens sujets de Géométrie, de Méchanique, d'Optique, d'Astronomie... Tome Premier [-Tome V, divisé en deux parties]. Paris, David; Briasson, 1761-1768. Un'opera in 5 volumi. In-4° piccolo (mm 216x165). I. xiv, [2], 303, [1] pagine. 7 tavole ripiegate di diagrammi, incise su legno. II. [4], 328, [4] pagine. 3 tavole ripiegate di diagrammi. Diagrammi nel testo. III. xvij, [1], 420 pagine. Una tavola incisa, ripiegata. IV. xvi, 380, [2 di 4, manca l'ultima carta bianca] pagine. 2 tavole incise ripiegate (la seconda abbastanza brunita). V. xx, 520 pagine (Tomo V diviso in due parti, con paginazione continua). 4 tavole incise ripiegate (un po' brunite, margine superiore dell'ultima tavola rifilato). Vignetta silografica sui frontespizi. Capilettera, testatine e finalini incisi su legno. Legatura coeva francese uniforme in vitello raciné su piatti in cartone, dorso a 5 nervi decorati con ferri floreali in oro, titoli e numero di volume in oro su doppio tassello in marocchino rosso, contropiatti e carte di guardia posteriori in carta marmorizzata, segnalibro in seta verde, tagli rossi. Bordi dei piatti e angoli leggermente abrasi. Ottimo esemplare, impresso su carta forte, alcuni fascicoli uniformemente bruniti, lievi aloni e fioriture, più evidenti alle carte iniziali del secondo e del terzo volume; alcuni fogli allentati o staccati, nel terzo volume in particolare. Al dorso del terzo volume segnatura manoscritta su piccola etichetta cartacea '6.202'. Set in legatura omogenea degli Opuscules mathématiques di d'Alembert, una ampia raccolta di memorie e contributi in varie discipline scientifiche (matematica, fisica, astronomia) composti per le Accademie di Scienze di Parigi e Berlino. "Although the mathematical articles of the Encyclopedie had aired many of his notions, these volumes provide the closest thing to a collection of them that exists [...] In volume V of the Opuscules he published a test for convergence that is still called d'Alembert's theorem" (DSB). Altri tre volumi di Opuscules furono stampati nel 1780, mentre un nono rimase inedito. 5 volumes, small 4° (216x165 mm). I. xiv, [2], 303, [1] pages. 7 folding engraved plates of diagrams. II. [4], 328, [4] pages. 3 folding engraved plates of diagrams. Diagrams in the text. III. xvij, [1], 420 pages. One folding engraved plate. IV. xvi, 380, [2 of 4, lacking the last blank leaf] pages. 2 folding engraved plates (the second plate rather browned). V. xx, 520 pages (Tome V is divided into two parts, with running pagination). 4 folding engraved plates (some browning, the upper margin of the last one trimmed near rule border). Woodcut vignette on each title-page. Woodcut head- and tailpieces, decorated initials. Contemporary French uniform tree calf over pasteboards. Spine with five raised bands, decorated with gilt floral tools, title and volume numbering in gold on double red morocco lettering-piece. Board edges gilt ruled, marbled pastedowns and flyleaves, green silk bookmarks. Edges red. Board edges and corners slightly rubbed. A very good copy, printed on strong paper. Some quires uniformly browned. Scattered light spotting and foxing, heavier to the first leaves of second and third volume. A few paper flaws, especially in the third volume. In the third volume the shelfmark '6.202' inked on a small paper label at the bottom of spine. The scarce five-volume set of d'Alembert Opuscules mathématiques, which include a collection of higly remarkable memoirs on mathematics, physics and astronomy, contributed to the Academies of Sciences in Paris and Berlin. "Although the mathematical articles of the Encyclopedie had aired many of his notions, these volumes provide the closest thing to a collection of them that exists [...] In volume V of the Opuscules he published a test for convergence that is still called d'Alembert's theorem" (DSB). Three further volumes of the Opuscules appeared in 1780, while a ninth volume