...

diff --git a/helm/software/matita/core_notation.moo b/helm/software/matita/core_notation.moo
index 9891129afa0d1bcf3c92102eb6cded9822f4f946..99366ac6a3808b6cbbb88a93f6a6f1e05fe0c647 100644 (file)
--- a/helm/software/matita/core_notation.moo
+++ b/helm/software/matita/core_notation.moo
@@ -11,6 +11,19 @@ notation > "\exists list1 ident x sep , opt (: T). term 19 Px"
           @{ ${ fold right @{$Px} rec acc @{'exists (λ${ident x}.$acc)} } }
        }.
 
+notation < "hvbox(\Sigma ident i opt (: ty) break . p)"
+  right associative with precedence 20
+for @{ 'sigma ${default
+  @{\lambda ${ident i} : $ty. $p}
+  @{\lambda ${ident i} . $p}}}.
+
+notation > "\Sigma list1 ident x sep , opt (: T). term 19 Px"
+  with precedence 20
+  for ${ default
+          @{ ${ fold right @{$Px} rec acc @{'sigma (λ${ident x}:$T.$acc)} } }
+          @{ ${ fold right @{$Px} rec acc @{'sigma (λ${ident x}.$acc)} } }
+       }.
+
 notation "hvbox(\langle term 19 a, break term 19 b\rangle)" 
 with precedence 90 for @{ 'pair $a $b}.