Although of Jewish descent, his parents were Protestants and they brought Guldin up in that faith.[3] He was a professor of mathematics in Graz and Vienna.
^Schuppener, Georg (1 December 1997). "Kepler's relation to the Jesuits—A study of his correspondence with Paul Guldin". NTM Zeitschrift für Geschichte der Wissenschaften, Technik und Medizin. 5 (1): 236–244. doi:10.1007/BF02913670. PMID27742956. S2CID32688599.
^Amir Alexander (2014). Infinitesimal: How a Dangerous Mathematical Theory Shaped the Modern World. Scientific American / Farrar, Straus and Giroux. ISBN978-0374176815.