X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita.lang;h=b7198579c4eac2c5b67401d1a2f09a295f6cfcab;hb=f01ea391a615404b49aee832452bec33d3e595dd;hp=3aa42083e6496994b79a22043ce39676bcb2b405;hpb=36243ef64310a9ea2e51a0295744ab5de7abe055;p=helm.git

diff --git a/matita/matita.lang b/matita/matita.lang
index 3aa42083e..b7198579c 100644
--- a/matita/matita.lang
+++ b/matita/matita.lang
@@ -131,6 +131,10 @@
     <keyword>assume</keyword>
     <keyword>suppose</keyword>
     <keyword>by</keyword>
+    <keyword>is</keyword>
+    <keyword>or</keyword>
+    <keyword>equivalent</keyword>
+    <keyword>equivalently</keyword>
     <keyword>we</keyword> 
     <keyword>prove</keyword>
     <keyword>proved</keyword>