Project icon: lavishly furnished initial letter with a painting of Ptolemy using an astrolab.

Ptolemaeus

Arabus et Latinus

_ (the underscore) is the placeholder for exactly one character.
% (the percent sign) is the placeholder for no, one or more than one character.

At the beginning and at the end, these placeholders are superfluous.

Nürnberg, Johannes Petreius, 1541

Title page:

‘Tractatus Georgii Peurbachii super propositiones Ptolemaei de sinubus et chordis. Item compositio tabularum sinuum per Ioannem de Regiomonte. Adiectae sunt et tabulae sinuum duplices per eundem Regiomontanum. Omnia tunc primum in utilitatem astronomiae studiosis impressa. Norimbergae apud Iohan<nem> Petreium, anno Christi M.D.XLI.’

Astronomy: Johannes Schöner, dedicatory letter to Hieronymus Schreiber ([A1]v); Ptolemaica (A2r-B1v); Regiomontanus, Compositio tabularum sinuum (B2r-C1r), with tables (C1v-G3r).

Lit.

VD16 P 2071; VD16 P 5249; VD16 M 6534; 450 Jahre Copernicus „De revolutionibus“. Astronomische und mathematische Bücher aus Schweinfurter Bibliotheken. Ausstellung des Stadtarchivs Schweinfurt in Zusammenarbeit mit der Bibliotheken Otto Schäfer (21. November 1993 – 19. Juni 1994), ed. U. Müller, Schweinfurt, 1998, 197-199, no. 44.

Exemplar

Munich, Bayerische Staatsbibliothek, 2 A.gr.b. 1013

A2r‑B1v

‘Tractatus sinuum et chordarum Georgii Peurbachii. Sinuum, cordarum et arcuum noticia ad coelestium motuum cognitionem pervalde necessaria existit, ideo de eorum doctrina restat in praesenti perquirendum — Et similiter sciemus quantitates reliquarum chordarum, facilis ergo est secundum praemissorum tenorem chordarum ad suos arcus cognitio.’