Step
*
1
of Lemma
free-from-atom-pair
1. a : Atom1
2. X : Type
3. Y : Type
4. x : X
5. y : Y
6. a#x:X
7. a#y:Y
8. a#y:Y ∈ ℙ
9. a#x:X ∈ ℙ
⊢ a#<x, y>:X × Y
BY
{ (FreeFromAtomApElim ⌜x⌝⋅ THEN FreeFromAtomApElim ⌜y⌝⋅ THEN FreeFromAtomTriviality THEN Auto)⋅ }
Latex:
Latex:
1. a : Atom1
2. X : Type
3. Y : Type
4. x : X
5. y : Y
6. a\#x:X
7. a\#y:Y
8. a\#y:Y \mmember{} \mBbbP{}
9. a\#x:X \mmember{} \mBbbP{}
\mvdash{} a\#<x, y>:X \mtimes{} Y
By
Latex:
(FreeFromAtomApElim \mkleeneopen{}x\mkleeneclose{}\mcdot{} THEN FreeFromAtomApElim \mkleeneopen{}y\mkleeneclose{}\mcdot{} THEN FreeFromAtomTriviality THEN Auto)\mcdot{}
Home
Index