Mercurial Mercurial > repos > isabelle / comparison
summary | shortlog | changelog | graph | tags | bookmarks | branches | files | changeset | file | latest | revisions | annotate | diff | comparison | raw | help
Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
src/HOL/ex/cla.ML
changeset 2997 86aaab39ebb1
parent 2922 580647a879cf
child 3019 ca5a7bbbee6c
equal deleted inserted replaced
2996:2a311f90747c 2997:86aaab39ebb1 
    16 by (Blast_tac 1);
 
    16 by (Blast_tac 1);
 
    17 result();
 
    17 result();
 
    18 
    18 
    19 (*If and only if*)
 
    19 (*If and only if*)
 
    20 
    20 
    21 goal HOL.thy "(P=Q) = (Q=P::bool)";
 
    21 goal HOL.thy "(P=Q) = (Q = (P::bool))";
 
    22 by (Blast_tac 1);
 
    22 by (Blast_tac 1);
 
    23 result();
 
    23 result();
 
    24 
    24 
    25 goal HOL.thy "~ (P = (~P))";
 
    25 goal HOL.thy "~ (P = (~P))";
 
    26 by (Blast_tac 1);
 
    26 by (Blast_tac 1);
isabelle