Step
*
of Lemma
not-msep
∀[X:Type]. ∀[d:metric(X)]. ∀[x,y:X]. x ≡ y supposing ¬x # y
BY
{ (Auto THEN Unfold `msep` -1 THEN (FLemma `not-rless` [-1] THENA Auto) THEN (Assert r0 ≤ mdist(d;x;y) BY Auto)) }
1
1. X : Type
2. d : metric(X)
3. x : X
4. y : X
5. ¬(r0 < mdist(d;x;y))
6. mdist(d;x;y) ≤ r0
7. r0 ≤ mdist(d;x;y)
⊢ x ≡ y
Latex:
Latex:
\mforall{}[X:Type]. \mforall{}[d:metric(X)]. \mforall{}[x,y:X]. x \mequiv{} y supposing \mneg{}x \# y
By
Latex:
(Auto
THEN Unfold `msep` -1
THEN (FLemma `not-rless` [-1] THENA Auto)
THEN (Assert r0 \mleq{} mdist(d;x;y) BY
Auto))
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