Step
*
1
of Lemma
extend-name-morph-face-map
.....wf.....
1. I : Cname List
2. K : Cname List
3. f : name-morph(I;K)
4. z : Cname
5. x : Cname
6. i : ℕ2
7. ¬(x ∈ K)
8. ¬(z ∈ I)
⊢ ((z:=i) o f) ∈ nameset([z / I]) ⟶ extd-nameset(K)
BY
{ (SubsumeC ⌜name-morph([z / I];K)⌝⋅ THEN Auto) }
Latex:
Latex:
.....wf.....
1. I : Cname List
2. K : Cname List
3. f : name-morph(I;K)
4. z : Cname
5. x : Cname
6. i : \mBbbN{}2
7. \mneg{}(x \mmember{} K)
8. \mneg{}(z \mmember{} I)
\mvdash{} ((z:=i) o f) \mmember{} nameset([z / I]) {}\mrightarrow{} extd-nameset(K)
By
Latex:
(SubsumeC \mkleeneopen{}name-morph([z / I];K)\mkleeneclose{}\mcdot{} THEN Auto)
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