Step
*
1
1
of Lemma
not-has-value-decidable-quot
.....assertion.....
1. E : (∀x:Base. ((x)↓ ∨ (¬(x)↓))) ⟶ (∀x:Base. ((x)↓ ∨ (¬(x)↓))) ⟶ ℙ
2. EquivRel(∀x:Base. ((x)↓ ∨ (¬(x)↓));f,g.E[f;g])
3. magic : ∀x:Base. ((x)↓ ∨ (¬(x)↓))@i
4. m1 : ∀x:Base. ((x)↓ ∨ (¬(x)↓))@i
5. E[magic;m1]@i
⊢ False
BY
{ (InstLemma `not_has-value_decidable_on_base` [] THEN Trivial) }
Latex:
Latex:
.....assertion.....
1. E : (\mforall{}x:Base. ((x)\mdownarrow{} \mvee{} (\mneg{}(x)\mdownarrow{}))) {}\mrightarrow{} (\mforall{}x:Base. ((x)\mdownarrow{} \mvee{} (\mneg{}(x)\mdownarrow{}))) {}\mrightarrow{} \mBbbP{}
2. EquivRel(\mforall{}x:Base. ((x)\mdownarrow{} \mvee{} (\mneg{}(x)\mdownarrow{}));f,g.E[f;g])
3. magic : \mforall{}x:Base. ((x)\mdownarrow{} \mvee{} (\mneg{}(x)\mdownarrow{}))@i
4. m1 : \mforall{}x:Base. ((x)\mdownarrow{} \mvee{} (\mneg{}(x)\mdownarrow{}))@i
5. E[magic;m1]@i
\mvdash{} False
By
Latex:
(InstLemma `not\_has-value\_decidable\_on\_base` [] THEN Trivial)
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