src/HOL/Hahn_Banach/Subspace.thy
2012-04-12 krauss 2012-04-12 Set_Algebras: removed syntax \<oplus> and \<otimes>, in favour of plain + and *
2011-09-11 wenzelm 2011-09-11 misc tuning and clarification;
2011-08-13 huffman 2011-08-13 HOL-Hahn_Banach: use Set_Algebras library
2009-10-17 wenzelm 2009-10-17 eliminated hard tabulators, guessing at each author's individual tab-width; tuned headers;
2009-06-24 wenzelm 2009-06-24 standard naming conventions for session and theories;