Step
*
of Lemma
msep-symm
∀[X:Type]. ∀d:metric(X). ∀x,y:X. uiff(x # y;y # x)
BY
{ (Unfold `msep` 0 THEN Auto THEN (Unhide THEN Auto) THEN RWO "mdist-symm" 0 THEN Auto) }
Latex:
Latex:
\mforall{}[X:Type]. \mforall{}d:metric(X). \mforall{}x,y:X. uiff(x \# y;y \# x)
By
Latex:
(Unfold `msep` 0 THEN Auto THEN (Unhide THEN Auto) THEN RWO "mdist-symm" 0 THEN Auto)
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