Step
*
1
of Lemma
r-strict-bound-property
1. ∀[x:ℝ]. ((r(-r-bound(x)) ≤ x) ∧ (x ≤ r(r-bound(x))))
2. x : ℝ
3. r(-r-bound(x)) ≤ x
4. x ≤ r(r-bound(x))
⊢ r(-(r-bound(x) + 1)) < x
BY
{ (Subst' -(r-bound(x) + 1) ~ (-r-bound(x)) + (-1) 0 THEN Auto) }
1
1. ∀[x:ℝ]. ((r(-r-bound(x)) ≤ x) ∧ (x ≤ r(r-bound(x))))
2. x : ℝ
3. r(-r-bound(x)) ≤ x
4. x ≤ r(r-bound(x))
⊢ r((-r-bound(x)) + (-1)) < x
Latex:
Latex:
1. \mforall{}[x:\mBbbR{}]. ((r(-r-bound(x)) \mleq{} x) \mwedge{} (x \mleq{} r(r-bound(x))))
2. x : \mBbbR{}
3. r(-r-bound(x)) \mleq{} x
4. x \mleq{} r(r-bound(x))
\mvdash{} r(-(r-bound(x) + 1)) < x
By
Latex:
(Subst' -(r-bound(x) + 1) \msim{} (-r-bound(x)) + (-1) 0 THEN Auto)
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