changed names of resource-1.3; added a note on homepage on release

1 files changed, 47 insertions, 0 deletions

diff --git a/old-examples/logic/Theory.gf b/old-examples/logic/Theory.gf
new file mode 100644
index 000000000..778e0a8ec
--- /dev/null
+++ b/old-examples/logic/Theory.gf
@@ -0,0 +1,47 @@
+abstract Theory = {
+
+  cat
+    Chapter ;
+    Jment ;
+    [Jment] {0} ;
+    Decl ;
+    [Decl] {0} ;
+    Prop ;
+    Proof ;
+    [Proof] {2} ;
+    Branch ;
+    Typ ;
+    Obj ;
+    Label ;
+    Ref ;
+    [Ref] ;
+    Adverb ;
+    Number ;
+    
+  fun
+    Chap       : Label -> [Jment] -> Chapter ;          -- title, text
+
+    JDefObj    : [Decl] -> Obj -> Obj -> Jment ;        -- a = b (G)
+    JDefObjTyp : [Decl] -> Typ -> Obj -> Obj -> Jment ; -- a = b : A (G)
+    JDefProp   : [Decl] -> Prop -> Prop -> Jment ;      -- A = B : Prop (G)
+    JThm       : [Decl] -> Prop -> Proof -> Jment ;     -- p : P (G)
+
+    DProp      : Prop  -> Decl ;                        -- assume P
+    DPropLabel : Label -> Prop -> Label ;               -- assume P (h)
+    DTyp       : Obj   -> Typ -> Decl ;                 -- let x,y be T
+
+    PProp      : Prop -> Proof ;                        -- P.
+    PAdvProp   : Adverb -> Prop -> Proof ;              -- Hence, P.
+    PDecl      : Decl -> Proof ;                        -- Assume P.
+    PBranch    : Branch -> [Proof] -> Proof ;           -- By cases: P1 P2
+
+    BCases     : Number -> Branch ;                     -- We have n cases.
+    
+    ARef       : Ref -> Adverb ;                        -- by Thm 2
+    AHence     : Adverb ;                               -- therefore
+    AAFort     : Adverb ;                               -- a fortiori
+
+    RLabel     : Label -> Ref ;                         -- Thm 2
+    RMany      : [Ref] -> Ref ;                         -- Thm 2 and Lemma 4
+
+}