A commentary on the first two books of the Almagesti minor (C.1.4), with revised proofs and added material from and references to the Almagest, Euclid’s Elements, Campanus of Novara’s De figura sectore and Theodosius’s Spherica. The text begins with chapter I.3, due to one missing folio in the only known manuscript. This manuscript was copied in and/or around 1410, probably at the University of Prague and possibly by Johannes Andree Schindel. The attribution ‘Bernhardi Chorner quondam Iacobi de Tyrnavia [Trnava, Slovakia]’ is unclear, but the second part of the name may refer to a ‘Iacobus Capellanus de Tyrna’, who matriculated in 1395 at the University of Vienna (Zepeda, 100 and n. 98).

Text ‘(Prague, APH, L. XLVIII) Sint AB et AG note. Essent quoque per secundum corollarium — sicque patet correlarium. Explicit Almagesti Ptolomey abreviatum Bernhardi Chorner quondam Iacobi de Tyrnavia.’

Bibl. H. Zepeda, The First Latin Treatise on Ptolemy’s Astronomy: The Almagesti minor (c. 1200), Turnhout, 2018, 100-103.

Modern ed. ---