Dominicus de Clavasio ( 1340–1357) was an Italian-origin scholar who taught in Paris and is known mainly from his book ''Practica geometriae'' (1346) which included commentaries on other works of the period. He is referred to variously as Dominicus de Calvisio, Dominicus de Clavaxio, Dominicus de Clivaxo, or Dominique de Chivasso.
De Clavasio's birth date is unknown but he was born in
Chivasso
Chivasso (; pms, Civass) is a comune in the Metropolitan City of Turin, in the Italian region of Piedmont, located about northeast of Turin. Chivasso has a population of about 27,000. It is situated on the left bank of the Po river, near the inf ...
near Turin and taught in Paris during 1349–1350 at the Collège de Constantinople. He wrote ''Practica geometriae'' (1346) which is made of three parts with Book I being a commentary on contemporary measurement, arithmetic and geometry; Book II on geometrical constructions and III on three-dimensional figures. He extensively commented on Aristotle's works, cited
Ptolemy
Claudius Ptolemy (; grc-gre, Πτολεμαῖος, ; la, Claudius Ptolemaeus; AD) was a mathematician, astronomer, astrologer, geographer, and music theorist, who wrote about a dozen scientific treatises, three of which were of importanc ...
, and
Campanus of Novara
Campanus of Novara ( 1220 – 1296) was an Italian mathematician, astronomer, astrologer, and physician who is best known for his work on Euclid's ''Elements''. In his writings he refers to himself as Campanus Nouariensis; contemporary documen ...
. The work went into several manuscript versions. He may have died while serving as court astrologer to
King John II.
References
14th-century Italian mathematicians
14th-century astrologers
{{Italy-mathematician-stub