The Schoenberg Institute for Manuscript Studies at Penn brings manuscript culture, modern technology and people together.

Manuscript Monday: LJS 289 – Algorismus

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Dot Porter, Curator, Digital Research Services at the University of Pennsylvania Library, offers a video orientation to Penn Library’s LJS 289, Algorismus. This manuscript was written in Italy between 1450 and 1475, in Italian, and it is a pedagogical treatise on commercial and practical arithmetic, with extensive use of arabic numerals, descriptions of operations such as multiplication and division, and particular attention to proportions (using the rule of three), money-changing (fiorini, bolognini, and ducati), and alloys of precious metals.

You can see the full online facsimile of this work in Penn in Hand and you can download all of the images and metadata from OPenn.  You can also download a copy of this video and an eBook version of the manuscript (epub format) from ScholarlyCommons, the University of Pennsylvania’s open access institutional repository.


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