Penn Library's LJS 26 - Algorismus, Tractatum de sphaera. (Video Orientation)
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medieval manuscripts
Mathematics
Medieval Studies
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Mathematics
Medieval Studies
Other Arts and Humanities
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youtube
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2014-05-01
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Video orientation to LJS 26 - Sacro Bosco, Joannes de, active 1230 - Algorismus : Tractatum de sphaera. Summary: Treatise on the fundamentals of arithmetic (Algorismus), followed by a treatise on cosmography that describes and illustrates the Ptolemaic model of a spherical earth divided into climactic zones at the center of the concentric spheres of the universe. The second treatise has marginal notes in the same ink and possibly hand as the text, as well as notes in a later cursive hand in faint ink and a bifolium written in this later hand bound in (f. 23-24).