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'''[[:w:Grégoire de Saint-Vincent|Gregory St. Vincent]]''' (22 March 1584 Bruges – 5 June 1667 Ghent) was a Flemish Jesuit and [[mathematician]]. ...culi]'' (1647) Books I & II, translated and annotated by Ian Bruce, quoted from [http://www.17centurymaths.com/contents/gregorius/book1a%20pp1-20.pdf Book ...

...a matter of common usage to call the barbarous age that time which extends from about 900 or a thousand years up to about 150 years past, since men were fo ** ''Géographie'', in Les Oeuvres Mathématiques de Simon Stevin de Bruges (1634) ed. [[w:Albert Girard|Girard]], p. 106-108, as quoted by [[w:Jacob K ...