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| author | aarne <aarne@chalmers.se> | 2010-11-22 12:55:37 +0000 |
|---|---|---|
| committer | aarne <aarne@chalmers.se> | 2010-11-22 12:55:37 +0000 |
| commit | 76ba03b545600054176612201de78dca16eb65e1 (patch) | |
| tree | 5615286b239bee637b32465e9cbf36807ab2c318 /book/examples/chapter9/LogicSymb.gf | |
| parent | 0bf41793694e8b3101d09e34858eba8ab2c8c5b6 (diff) | |
started a subdir for the book
Diffstat (limited to 'book/examples/chapter9/LogicSymb.gf')
| -rw-r--r-- | book/examples/chapter9/LogicSymb.gf | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/book/examples/chapter9/LogicSymb.gf b/book/examples/chapter9/LogicSymb.gf new file mode 100644 index 000000000..14932fe9b --- /dev/null +++ b/book/examples/chapter9/LogicSymb.gf @@ -0,0 +1,13 @@ +concrete LogicSymb of Logic = open Formal, Prelude in { + +lincat + Prop, Ind = TermPrec ; +lin + And = infixl 2 "\\&" ; + Or = infixl 2 "\\vee" ; + If = infixr 1 "\\sup" ; + Not = prefix 3 "\\sim" ; + All P = prefix 3 (parenth ("\\forall" ++ P.$0)) P ; + Exist P = prefix 3 (parenth ("\\exists" ++ P.$0)) P ; + Past = prefix 3 "P" ; +} |