PAL

Jordanus


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Oxford, Bodleian Library, Savile 17 MS Author standard `Abd al-Aziz ibn `Uthman al Kabisi Petrus de Dacia; Gerardus Cremonensis; Alcabitius; Johannes Hispalensis; `Abd al-Aziz ibn `Uthman al Kabisi; Johannes de Sacrobosco; Alexander de Villa Dei; In a hand different from that of the preceding items and somewhat later. Astronomical treatises and tables, among which are:; Kalendarium nouum; A "practica astrolabii" (50 chpts); De spera celi; Theorica planetarum; In libro introductorio judiciorum astronomicorum; Algorismus; Metrical arithmetic (286 lines); A prose work on arithmetic; A short geometrical piece; On the sphere; Noua compilatio; Massa compoti; On arithmetic (frag.) Quere in superiori parte istius tabule numerum annorum; Nomina instrumentorum sunt hec; Spera celi ut dicit Ysidorus est species quedam; Circulus egresse cuspidis; Postulata a domino prolixitate; Omnia que a primitiva origine rerum; Hec algorismus ars presens dicitur, in qua; Numerorum alius digitus alius articulus; Scire debes quod circulus duas habet medietates; Tractatum de sphera in 4 capitulis distinguimus; Compotus est sciencia considerans tempora; Aureus in Jano numerus; In principio videndum est quid est algorismus.