From 1517 to 1521, Rudolff was a student of Henricus Grammateus (Schreyber from Erfurt) at the University of Vienna and was the author of a book computing, under the title: Behend und hübsch Rechnung durch die kunstreichen regeln Algebre so gemeinicklich die Coss genent werden (Nimble and beautiful calculation via the artful rules of algebra [which] are so commonly called "coss").[2]
He introduced the radical symbol (√) for the square root. It is believed that this was because it resembled a lowercase "r" (for "radix"),[3][4] though there is no direct evidence.[5]Cajori only says that a "dot is the embryo of our present symbol for the square root"[6] though it is "possible, perhaps probable" that Rudolff's later symbols are not dots but 'r's.[7]
Furthermore, he used the meaningful definition that x0 = 1.
^Rudolff, Christoff (1525). Behend vnnd Hübsch Rechnung durch die kunstreichen regeln Algebra, so gemeimblich die Coß genannt werden ... (in German). Cephaleus.
^Note: "Influenced by al-Khowarizmi and later Islamic writers who called the unknown [i.e., the variable x] shai, Arabic for "thing", Latin texts used res and those in Italian used cosa ("thing"). In Italy, algebra became known as l'arte della cosa, in England as cossike arte, or the rule of coss, and in Germany, die Coss." Jan Gullberg, Mathematics: From the Birth of Numbers (New York, New York: W.W. Norton, 1997), page 299.
^. Archived from the original on 2006-04-07. Retrieved 2010-04-18.
^Florian Cajori (1919), A history of mathematics (2 ed.), The Macmillan Company, p. 140
^Florian Cajori (1993), A history of mathematical notations, Volumes 1-2 (reprint ed.), Courier Dover Publications, p. 369, ISBN978-0-486-67766-8
Referencesedit
Wolfgang Kaunzner; Karl Röttel; Christoff Rudolff (2006). Christoff Rudolff aus Jauer in Schlesien: zum 500. Geburtstag eines bedeutenden Cossisten und Arithmetikers, der aus diesem seinerzeit hoheitlich zur Krone von Böhmen gehörenden Landesteil stammt [Christoff Rudolff from Jauer in Silesia: on the 500th birthday of an important algebraist and arithmetician, who came from this region, which in his time belonged to the royal crown of Bohemia]. ISBN978-3-928671-39-2.
christoph, rudolff, born, 1499, jawor, silesia, died, 1545, vienna, german, mathematician, author, first, german, textbook, algebra, from, 1517, 1521, rudolff, student, henricus, grammateus, schreyber, from, erfurt, university, vienna, author, book, computing,. Christoph Rudolff born 1499 in Jawor Silesia died 1545 in Vienna was a German mathematician the author of the first German textbook on algebra 1 From 1517 to 1521 Rudolff was a student of Henricus Grammateus Schreyber from Erfurt at the University of Vienna and was the author of a book computing under the title Behend und hubsch Rechnung durch die kunstreichen regeln Algebre so gemeinicklich die Coss genent werden Nimble and beautiful calculation via the artful rules of algebra which are so commonly called coss 2 He introduced the radical symbol for the square root It is believed that this was because it resembled a lowercase r for radix 3 4 though there is no direct evidence 5 Cajori only says that a dot is the embryo of our present symbol for the square root 6 though it is possible perhaps probable that Rudolff s later symbols are not dots but r s 7 Furthermore he used the meaningful definition that x0 1 Contents 1 See also 2 Notes 3 References 4 External linksSee also editHistory of mathematical notationNotes edit Rudolff Christoff 1525 Behend vnnd Hubsch Rechnung durch die kunstreichen regeln Algebra so gemeimblich die Coss genannt werden in German Cephaleus Note Influenced by al Khowarizmi and later Islamic writers who called the unknown i e the variable x shai Arabic for thing Latin texts used res and those in Italian used cosa thing In Italy algebra became known as l arte della cosa in England as cossike arte or the rule of coss and in Germany die Coss Jan Gullberg Mathematics From the Birth of Numbers New York New York W W Norton 1997 page 299 Walter William Rouse Ball 1960 A short account of the history of mathematics 4 ed Courier Dover Publications p 215 ISBN 978 0 486 20630 1 Howard Whitley Eves 1983 Great moments in mathematics before 1650 Volume 1 MAA p 131 ISBN 978 0 88385 310 8 History of Mathematical Symbols by Douglas Weaver and Anthony D Smith University of South Australia Archived from the original on 2006 04 07 Retrieved 2010 04 18 Florian Cajori 1919 A history of mathematics 2 ed The Macmillan Company p 140 Florian Cajori 1993 A history of mathematical notations Volumes 1 2 reprint ed Courier Dover Publications p 369 ISBN 978 0 486 67766 8References editWolfgang Kaunzner Karl Rottel Christoff Rudolff 2006 Christoff Rudolff aus Jauer in Schlesien zum 500 Geburtstag eines bedeutenden Cossisten und Arithmetikers der aus diesem seinerzeit hoheitlich zur Krone von Bohmen gehorenden Landesteil stammt Christoff Rudolff from Jauer in Silesia on the 500th birthday of an important algebraist and arithmetician who came from this region which in his time belonged to the royal crown of Bohemia ISBN 978 3 928671 39 2 Moritz Cantor 1889 Rudolff Christoff R Allgemeine Deutsche Biographie ADB in German vol 29 Leipzig Duncker amp Humblot pp 571 572 Wolfgang Kaunzner 2005 Rudolff Christoff Neue Deutsche Biographie in German vol 22 Berlin Duncker amp Humblot p 198 O Connor John J Robertson Edmund F Christoph Rudolff MacTutor History of Mathematics Archive University of St AndrewsExternal links editDie Coss Christoffs Rudolffs nbsp This article about a German mathematician is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Christoph Rudolff amp oldid 1185039894, wikipedia, wiki, book, books, library,
