helm/software/matita/contribs/dama/dama_duality/constructive_pointfree/lebesgue.ma

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  14
  15
  16
  17 include "metric_lattice.ma".
  18 include "sequence.ma".
  19 include "constructive_connectives.ma".
  20
  21 (* Section 3.2 *)
  22
  23 (* 3.21 *)
  24
  25
  26 (* 3.17 *)
  27
  28
  29 (* 3.20 *)
  30 lemma uniq_sup: ∀O:ogroup.∀s:sequence O.∀x,y:O. is_sup ? s x → is_sup ? s y → x ≈ y.
  31 intros;