Step
*
2
of Lemma
branch_wf2
1. P : ℙ
2. y : ¬P
3. T : Type
4. A : P ⟶ T
5. B : ⋂q:¬P. T
⊢ B ∈ T
BY
{ (With ⌜y⌝ (D (-1))⋅ THEN Auto) }
Latex:
Latex:
1. P : \mBbbP{}
2. y : \mneg{}P
3. T : Type
4. A : P {}\mrightarrow{} T
5. B : \mcap{}q:\mneg{}P. T
\mvdash{} B \mmember{} T
By
Latex:
(With \mkleeneopen{}y\mkleeneclose{} (D (-1))\mcdot{} THEN Auto)
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