"that is equivalent to" and "or equivalently" implemented in most situations.

[helm.git] / matita / matita.lang

diff --git a/matita/matita.lang b/matita/matita.lang
index 3aa42083e6496994b79a22043ce39676bcb2b405..b7198579c4eac2c5b67401d1a2f09a295f6cfcab 100644 (file)
--- 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>