more work on dama

[helm.git] / helm / software / matita / library / algebra / groups.ma

diff --git a/helm/software/matita/library/algebra/groups.ma b/helm/software/matita/library/algebra/groups.ma
index c83b3d2d0cc4359f982cf24cdcab9b869e72489f..aeb0d779ab98d46de7c0f24b1e6a37ca8b25eb44 100644 (file)
--- a/helm/software/matita/library/algebra/groups.ma
+++ b/helm/software/matita/library/algebra/groups.ma
@@ -144,7 +144,7 @@ record morphism (G,G':Group) : Type ≝
    f_morph: ∀x,y:G.image(x·y) = image x · image y
  }.
  
-notation "hvbox(f˜ x)" with precedence 79
+notation "hvbox(f\tilde x)" with precedence 79
 for @{ 'morimage $f $x }.
 
 interpretation "Morphism image" 'morimage f x =
@@ -193,10 +193,10 @@ interpretation "Subgroup image" 'subgroupimage H x =
 definition member_of_subgroup ≝
  λG.λH:subgroup G.λx:G.∃y.x=y \sub H.
 
-notation "hvbox(x break ∈ H)" with precedence 79
+notation "hvbox(x break \in H)" with precedence 79
 for @{ 'member_of $x $H }.
 
-notation "hvbox(x break ∉ H)" with precedence 79
+notation "hvbox(x break \notin H)" with precedence 79
 for @{ 'not_member_of $x $H }.
 
 interpretation "Member of subgroup" 'member_of x H =
@@ -235,7 +235,7 @@ definition left_coset_disjoint ≝
  λG.λC,C':left_coset G.
   ∀x.¬(((element ? C)·x \sub (subgrp ? C)) ∈ C'). 
 
-notation "hvbox(a break ∥ b)"
+notation "hvbox(a break \par b)"
  non associative with precedence 45
 for @{ 'disjoint $a $b }.