Step
*
of Lemma
qadd-qmax
∀[a,b,c:ℚ]. ((a + qmax(b;c)) = qmax(a + b;a + c) ∈ ℚ)
BY
{ xxx(Auto THEN Unfold `qmax` 0 THEN RepeatFor 2 ((SplitOnConclITE THENA Auto)) THEN Auto)xxx }
1
.....falsecase.....
1. a : ℚ
2. b : ℚ
3. c : ℚ
4. b ≤ c
5. ¬((a + b) ≤ (a + c))
⊢ (a + c) = (a + b) ∈ ℚ
2
.....truecase.....
1. a : ℚ
2. b : ℚ
3. c : ℚ
4. ¬(b ≤ c)
5. (a + b) ≤ (a + c)
⊢ (a + b) = (a + c) ∈ ℚ
Latex:
Latex:
\mforall{}[a,b,c:\mBbbQ{}]. ((a + qmax(b;c)) = qmax(a + b;a + c))
By
Latex:
xxx(Auto THEN Unfold `qmax` 0 THEN RepeatFor 2 ((SplitOnConclITE THENA Auto)) THEN Auto)xxx
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