Almagesti Ptolomei abbreviatum
‘(Prague, APH, L. XLVIII) Sint ab et ag nota, essent quoque per secundum corporum — sicque patet correlarium. Explicit Almagesti Ptolomey abreviatum Bernhardi Chorner quondam Iacobi de Tyrnavia.’
A commentary on Almagesti minor I-II.34, with revised proofs and added material from and references to the Almagest, Campanus of Novara’s De figura sectore, Theodosius’s Spherica, the Indians and Arzachel. The text begins with I.3, due to one missing folio in the only known MS.
The only known MS was copied probably at the University of Prague c. 1410 by a single hand, perhaps that of Johannes Andree Schindel. The attribution ‘Bernhardi Chorner quondam Iacobi de Tyrnavia [Trnava, Slovakia]’ is unclear, but may refer to a ‘Iacobus capellanus de Tyrna’, who matriculated in 1395 at the University of Vienna.
H. Zepeda, The First Latin Treatise on Ptolemy’s Astronomy: The Almagesti minor (c. 1200), Turnhout, 2018, 100-103.