(25. 3. 1538 Bamberg, DE – 6. 2. 1612 Roma, IT)
German Jesuit mathematician and astronomer
Student of Nunes in Coimbra
Professor of mathematics, Collegio Romano, Rome
Father of the modern Gregorian calendar
Collaborator of Galileo
Credit, Wikipedia. Available online http://en.wikipedia.org/wiki/Christopher_Clavius
The MacTutor History of Mathematics.
Available online http://www-history.mcs.st-andrews.ac.uk/Biographies/Clavius.html