src/HOL/IMP/Hoare_Sound_Complete.thy
2017-11-07 nipkow Replaced { } proofs by local lemmas; added Hoare logic with logical variables.
2016-07-23 nipkow added new vcg based on existentially quantified while-rule
2013-12-18 nipkow added lemma
2013-08-13 wenzelm standardized symbols via "isabelle update_sub_sup", excluding src/Pure and src/Tools/WWW_Find;
2013-06-13 nipkow simplified proofs
2013-06-06 nipkow tuned defs
2013-06-03 nipkow corrected name
2013-05-28 nipkow tuned
2013-05-27 nipkow tuned
2013-05-27 nipkow tuned
2013-05-17 nipkow replaced `;' by `;;' to disambiguate syntax; unexpected slight increase in build time
2012-04-28 nipkow renamed Semi to Seq
2011-09-20 nipkow Updated IMP to use new induction method
2011-06-06 kleing imported rest of new IMP
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