add some virtuals

diff --git a/helm/software/matita/predefined_virtuals.ml b/helm/software/matita/predefined_virtuals.ml
index 49d5f866dd93dbbad6749cf6c3cfaba1687a98bd..0a51d8a7caf192019b2aebb43bc6293c6d65777a 100644 (file)
--- a/helm/software/matita/predefined_virtuals.ml
+++ b/helm/software/matita/predefined_virtuals.ml
@@ -1567,9 +1567,9 @@ let predefined_classes = [
  ["z"; "ζ"; "𝕫"; "𝐳"; "𝛇"; ] ;
  ["Z"; "ℨ"; "ℤ"; "𝐙";] ;
  ["0"; "𝟘"; ] ;
- ["1"; "𝟙"; ] ;
- ["2"; "𝟚"; ] ;
- ["3"; "𝟛"; ] ;
+ ["1"; "𝟙"; "¹"] ;
+ ["2"; "𝟚"; "²"] ;
+ ["3"; "𝟛"; "³"] ;
  ["4"; "𝟜"; ] ;
  ["5"; "𝟝"; ] ;
  ["6"; "𝟞"; ] ;