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-rw-r--r--language/l2_typ.ott1
1 files changed, 1 insertions, 0 deletions
diff --git a/language/l2_typ.ott b/language/l2_typ.ott
index 12baa059..3ffc5b2b 100644
--- a/language/l2_typ.ott
+++ b/language/l2_typ.ott
@@ -85,6 +85,7 @@ ne :: 'Ne_' ::=
| infinity :: :: inf
| ne1 * ne2 :: :: mult
| ne1 + ... + nen :: :: add
+ | ne1 - ne2 :: :: minus
| 2 ** ne :: :: exp
| ( - ne ) :: :: unary
| zero :: S :: zero