Step
*
1
of Lemma
name-morph-satisfies-fset-join
1. I : fset(ℕ)
2. J : fset(ℕ)
3. f : J ⟶ I
⊢ ∀s:fset(Point(face_lattice(I))). SqStable((\/(s) f) = 1
⇐⇒ ↓∃a:Point(face_lattice(I)). (a ∈ s ∧ (a f) = 1))
BY
{ (RepUR ``name-morph-satisfies`` 0 THEN Auto) }
Latex:
Latex:
1. I : fset(\mBbbN{})
2. J : fset(\mBbbN{})
3. f : J {}\mrightarrow{} I
\mvdash{} \mforall{}s:fset(Point(face\_lattice(I)))
SqStable((\mbackslash{}/(s) f) = 1 \mLeftarrow{}{}\mRightarrow{} \mdownarrow{}\mexists{}a:Point(face\_lattice(I)). (a \mmember{} s \mwedge{} (a f) = 1))
By
Latex:
(RepUR ``name-morph-satisfies`` 0 THEN Auto)
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