!!!Rudolff, Christoff Rudolff, Christoff, b. Jawor, Poland (then Jauer), 1500 (?), d. Vienna, 1545, mathematician. Studied under Grammateus in Vienna. Taught privately, not at a university. Was an eminent arithmetical genius and major contributor to the advancement of algebra and arithmetics. He simplified equations with unknown factors and developed a modern set of symbols; introduced the radical sign for square roots. !Works Behend und huebsch Rechnung, 1525; Kuenstlich rechnung mit der ziffer und den zalpfennigen, 1526; Exempelbuechlein, 1530. !Literature M. Cantor, Vorlesungen ueber Geschichte der Mathemathik, 4 vols., 1880-1898 (vol. 2); ADB. %%language [Back to the Austrian Version|AEIOU/Rudolff,_Christoff|class='wikipage austrian'] %% [{FreezeArticle author='AEIOU' template='Lexikon_1995_englisch'}] [{ALLOW view All}][{ALLOW comment All}][{ALLOW edit FreezeAdmin}]