isabelle: Graph

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recovered structural equality from 9d97bd3c086a, otherwise update_perspective might be issued over and over again, canceling a pending/slow execution;
2011-11-25, by wenzelm
proper intro? declarations -- NB: elim? indexes on major premise, which is too flexible here and easily leads to inefficiences (cf. a0336f8b6558);
2011-11-25, by wenzelm
improved example to only use quotient_definitions; added lemmas to serve as possible replacement for the existing RBT theory
2011-11-25, by bulwahn
in a local context, also the free variable case needs to be analysed default tip
2011-11-25, by Christian Urban
speed-up proof;
2011-11-24, by wenzelm
more abstract datatype stamp, which avoids pointless allocation of mutable cells;
2011-11-24, by wenzelm
modernized some old-style infix operations, which were left over from the time of ML proof scripts;
2011-11-24, by wenzelm
simplified -- empty_ss already contains minimal mksimps;
2011-11-24, by wenzelm
Abstract interpretation is now based uniformly on annotated programs,
2011-11-24, by nipkow
tuned;
2011-11-23, by wenzelm
tuned;
2011-11-23, by wenzelm
modernized some old-style infix operations, which were left over from the time of ML proof scripts;
2011-11-23, by wenzelm
tuned;
2011-11-23, by wenzelm
updated according to bdcaa3f3a2f4;
2011-11-23, by wenzelm

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