Petri Philomeni de Dacia in algorismum vulgarem Johannis de Sacrobosco commentarius. Una cum algorismo ipso edidit et praefatus est Maximilianus Curtze.
92 triplatorum, ponas eundem 2 sic: 9524890 321 1072 5 Ducas igitur nunc de novo omnes figuras infimas in medias, et hoc est ducere digitum inventunm cum subtriplis in triplata, et provenient istae figurae stantes in supremo ordine: 344112 9524890 10 3212 107 Quo facto ducas digitum inventurn in producturn, et erunt in supremo ordine 688224. Quibus detractis de numero proposito remanebunt 2642650. Deinde ducas eundem digitum inventum 15 in se cubice, et producturnm, scilicet 8, tollas respectu digiti, et remanebunt de toto numero proposito 2642642. Radix autem habetur inventa, si praeponatur digitus ultirno inventus omnibus subtriplis, et erit 1072. Quae si ducatur in se cubice, provenit iste numerus 1231925248, qui est maximus cubicus de toto 20 numero proposito, cui si residuum addideris, redibunt figurae primae 1234567890. Et quod iste sit cubicus maximus illius numeri, probes sic. Kadici addas inventae unitatem, et ducas earn in se cubice, et resultabit maior numerus numero proposito, quia resultabit iste 1235376017, qui excedit primum nu25 merum in tanto numero, scilicet 808127; erit igitur numerus extractus, cuius radicem invenisti, maximus cubicus in toto numero proposito. EXPLICIT.
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About this Item
- Title
- Petri Philomeni de Dacia in algorismum vulgarem Johannis de Sacrobosco commentarius. Una cum algorismo ipso edidit et praefatus est Maximilianus Curtze.
- Author
- Sacro Bosco, Joannes de, fl. 1230.
- Canvas
- Page 80
- Publication
- Hauniae,: A. F. Host,
- 1897.
- Subject terms
- Arithmetic
Technical Details
- Link to this Item
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https://name.umdl.umich.edu/acv7283.0001.001
- Link to this scan
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https://quod.lib.umich.edu/u/umhistmath/acv7283.0001.001/113
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DPLA Rights Statement: No Copyright - United States
Related Links
IIIF
- Manifest
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https://quod.lib.umich.edu/cgi/t/text/api/manifest/umhistmath:acv7283.0001.001
Cite this Item
- Full citation
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"Petri Philomeni de Dacia in algorismum vulgarem Johannis de Sacrobosco commentarius. Una cum algorismo ipso edidit et praefatus est Maximilianus Curtze." In the digital collection University of Michigan Historical Math Collection. https://name.umdl.umich.edu/acv7283.0001.001. University of Michigan Library Digital Collections. Accessed June 2, 2025.