Revision as of 06:57, 14 September 2014 edit Jochen Burghardt (talk \| contribs) Extended confirmed users 24,305 edits →top: suggest more specific context 'group th.'; wikilink ← Previous edit		Revision as of 15:13, 3 May 2015 edit undo 176.239.136.135 (talk) Trşed to check in French wikipedia but they don't have the concept Next edit →
Line 1: In mathematical [[group theory]], the '''root datum''' ~~('''donnée radicielle''' in French)~~ of a connected split [[reductive group\|reductive]] [[algebraic group]] over a field is a generalization of a [[root system]] that determines the group up to isomorphism. They were introduced by [[Michel Demazure]] in [[Grothendieck's Séminaire de géométrie algébrique\|SGA III]], published in 1970. ==Definition==

Root datum: Difference between revisions