(* *)
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-set "baseuri" "cic:/matita/formal_topologyxxx2/".
+set "baseuri" "cic:/matita/formal_topology/".
include "logic/equality.ma".
axiom S: Type.
notation "hvbox(A break ⊆ B)" with precedence 59
for @{ 'subseteq $A $B}.
-interpretation "Subseteq" 'subseteq A B =
- (cic:/matita/formal_topologyxxx2/leq.con A B).
+interpretation "Subseteq" 'subseteq A B = (leq A B).
axiom leq_refl: ∀A. A ⊆ A.
axiom leq_antisym: ∀A,B. A ⊆ B → B ⊆ A → A=B.