Step
*
1
of Lemma
rroot_wf
1. i : {2...}
2. x : ℝ
3. ↑isEven(i)
4. r0 ≤ x
⊢ rroot-abs(i;x) ∈ {y:ℝ| (True
⇒ (r0 ≤ y)) ∧ (y^i = x)}
BY
{ ((Assert x = |x| BY Auto) THEN MemTypeCD THEN Auto) }
1
1. i : {2...}
2. x : ℝ
3. ↑isEven(i)
4. r0 ≤ x
5. x = |x|
6. True
⊢ r0 ≤ rroot-abs(i;x)
Latex:
Latex:
1. i : \{2...\}
2. x : \mBbbR{}
3. \muparrow{}isEven(i)
4. r0 \mleq{} x
\mvdash{} rroot-abs(i;x) \mmember{} \{y:\mBbbR{}| (True {}\mRightarrow{} (r0 \mleq{} y)) \mwedge{} (y\^{}i = x)\}
By
Latex:
((Assert x = |x| BY Auto) THEN MemTypeCD THEN Auto)
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