Peurbach, Tractatus super propositiones Ptolemaei de sinubus & chordis, Nuremberg, 1541, later wrapper

PEURBACH, GEORG VON

Tractatus... super propositiones Ptolemaei de sinubus & chordis. Item compositio tabularum sinuum per Ioannem de Regiomonte. Adiectae sunt & tabulae sinuum duplices per eundem Regiomontanum. Nuremberg: Johann Petreius, 1541

FIRST EDITION, folio (305 x 202mm.), woodcut initials and diagrams, without final blank leaf, modern marbled paper wrappers, a few small stains

Peurbach's treatise contained a description of how to calculate the values of sines and chords, in the first place as explained by Arabic astronomers and then according to Ptolemy; Peurbach partly based his work on that of John of Gmunden's De sinubus, chordis et arcubus. The trigonometric tables of Regiomontanus are also published here for the first time. The preface is by Johannes Schöner, a Nuremberg mathematician and astronomer.

LITERATURE:

Tomash & Williams P63; USTC 699113; VD16 P 2071

PROVENANCE:

bought from Martayan Lan, New York, 1994; Erwin Tomash, booklabel