
diff -r 000000000000 -r a5a9c433f639 src/Modal/Modal0.thy
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/Modal/Modal0.thy	Thu Sep 16 12:20:38 1993 +0200
@@ -0,0 +1,39 @@
+(*  Title: 	91/Modal/modal0
+    ID:         $Id$
+    Author: 	Martin Coen
+    Copyright   1991  University of Cambridge
+*)
+
+Modal0 = LK +
+
+consts
+  box		:: "o=>o"	("[]_" [50] 50)
+  dia		:: "o=>o"	("<>_" [50] 50)
+  "--<",">-<"	:: "[o,o]=>o"	(infixr 25)
+  "@Lstar"	:: "[sequence,sequence]=>prop"	("(_)|L>(_)" [6,6] 5)
+  "@Rstar"	:: "[sequence,sequence]=>prop"	("(_)|R>(_)" [6,6] 5)
+  Lstar,Rstar	:: "[sobj=>sobj,sobj=>sobj]=>prop"
+
+rules
+  (* Definitions *)
+
+  strimp_def	"P --< Q == [](P --> Q)"
+  streqv_def	"P >-< Q == (P --< Q) & (Q --< P)"
+end
+
+ML
+
+local
+
+  val Lstar = "Lstar";
+  val Rstar = "Rstar";
+  val SLstar = "@Lstar";
+  val SRstar = "@Rstar";
+
+  fun star_tr c [s1,s2] = Const(c,dummyT)$LK.seq_tr1 s1$LK.seq_tr1 s2;
+  fun star_tr' c [Abs(_,_,s1),Abs(_,_,s2)] = 
+         Const(c,dummyT) $ LK.seq_tr1' s1 $ LK.seq_tr1' s2;
+in
+val parse_translation = [(SLstar,star_tr Lstar), (SRstar,star_tr Rstar)];
+val print_translation = [(Lstar,star_tr' SLstar), (Rstar,star_tr' SRstar)]
+end;




