An attempt at ostensiby named syntax.

[helm.git] / matita / matita / lib / basics / core_notation.ma

diff --git a/matita/matita/lib/basics/core_notation.ma b/matita/matita/lib/basics/core_notation.ma
index 3f6eda5a78fb41e7ec58daf35fd585ca71c36ae4..dd672ee842ba699f8556bd9b09ba80fb21ea278d 100644 (file)
--- a/matita/matita/lib/basics/core_notation.ma
+++ b/matita/matita/lib/basics/core_notation.ma
@@ -266,6 +266,9 @@ for @{ 'comprehension $s (\lambda ${ident i}. $p)}.
 notation "hvbox(a break ∈ b)" non associative with precedence 45
 for @{ 'mem $a $b }.
 
+notation "hvbox(a break ∉ b)" non associative with precedence 45
+for @{ 'notmem $a $b }.
+
 notation "hvbox(a break ≬ b)" non associative with precedence 45
 for @{ 'overlaps $a $b }. (* \between *)