X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Flib%2Fturing%2Fmono.ma;h=bab3ab1ba067d1e1c23665fc6924def2603a176b;hb=81fc94f4f091ec35d41e2711207218d255b75273;hp=39ecff800e79b11143e0db2d901a8112beaf4d65;hpb=77bf99a9ac05a61573d621d576e269870668f076;p=helm.git

diff --git a/matita/matita/lib/turing/mono.ma b/matita/matita/lib/turing/mono.ma
index 39ecff800..bab3ab1ba 100644
--- a/matita/matita/lib/turing/mono.ma
+++ b/matita/matita/lib/turing/mono.ma
@@ -109,6 +109,10 @@ definition tape_move ≝ λsig.λt: tape sig.λm:move.
     | N ⇒ t
     ].
 
+definition tape_move_mono ≝ 
+  λsig,t,mv.
+  tape_move sig (tape_write sig t (\fst mv)) (\snd mv).
+
 record config (sig,states:FinSet): Type[0] ≝ 
 { cstate : states;
   ctape: tape sig