Keywords: René François Walther de Sluze (Slusius).jpg en Belgian mathematician Rene de Sluse/Sluze 1622-1685 http //liegecitations wordpress com/1985/03/19/rene_francois_de_sluse_sluze_mathematicien_liege/ Author 17-th century PD-old-100 René François Walter de Sluse 1622 births 1685 deaths 17th-century mathematicians Abbots Ripton |