CS's system S

2026-04-23 19:42:50 -06:00 · 2005-12-20 14:20:42 +00:00
parent 774abf612d
commit 25b3168437
15 changed files with 562 additions and 0 deletions
--- a/examples/systemS/Formula.gf
+++ b/examples/systemS/Formula.gf
@@ -0,0 +1,20 @@
+-- 20 Dec 2005, 9.45
+
+abstract Formula = {
+
+  cat 
+    Formula ;
+    Term ;
+
+  fun
+    And, Or, If : (_,_ : Formula) -> Formula ;
+    Not : Formula -> Formula ;
+    Abs : Formula ;
+
+----    All, Exist : (Term -> Formula) -> Formula ;
+
+  -- to test
+
+    A, B, C : Formula ;
+
+}