diff options
Diffstat (limited to 'theories/Reals/Rtopology.v')
| -rw-r--r-- | theories/Reals/Rtopology.v | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/theories/Reals/Rtopology.v b/theories/Reals/Rtopology.v index b019bff37..5a170b5e5 100644 --- a/theories/Reals/Rtopology.v +++ b/theories/Reals/Rtopology.v @@ -14,6 +14,7 @@ Require Ranalysis1. Require RList. Require Classical_Prop. Require Classical_Pred_Type. +Import R_scope. Definition included [D1,D2:R->Prop] : Prop := (x:R)(D1 x)->(D2 x). Definition disc [x:R;delta:posreal] : R->Prop := [y:R]``(Rabsolu (y-x))<delta``. @@ -90,7 +91,8 @@ Qed. Definition eq_Dom [D1,D2:R->Prop] : Prop := (included D1 D2)/\(included D2 D1). -Infix "=_D" eq_Dom (at level 5, no associativity). +Infix "=_D" eq_Dom (at level 5, no associativity) + V8only (at level 50, no associativity). Lemma open_set_P1 : (D:R->Prop) (open_set D) <-> D =_D (interior D). Intro; Split. |