Step
*
1
1
1
of Lemma
decidable__uimplies
.....assertion.....
1. [P] : ℙ
2. Q : ⋂x:P. ℙ@i'
3. P@i
4. Dec(Q)
⊢ Q ∈ ℙ
BY
{ ((RenameVar `x' (-2)) THEN IsectHD x 2⋅ THEN Auto) }
Latex:
Latex:
.....assertion.....
1. [P] : \mBbbP{}
2. Q : \mcap{}x:P. \mBbbP{}@i'
3. P@i
4. Dec(Q)
\mvdash{} Q \mmember{} \mBbbP{}
By
Latex:
((RenameVar `x' (-2)) THEN IsectHD x 2\mcdot{} THEN Auto)
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