Step
*
2
of Lemma
comem-graph-cosets
1. [I] : Type
2. [E] : I ⟶ I ⟶ ℙ
3. i : I
4. x : coSet{i:l}
5. j : I
6. E[i;j]
7. x = (graph-cosets(I;i,j.E[i;j]) j) ∈ coSet{i:l}
⊢ ∃t:j:I × E[i;j]. (x = (graph-cosets(I;i,j.E[i;j]) (fst(t))) ∈ coSet{i:l})
BY
{ (RenameVar `e' (-2) THEN D 0 With ⌜<j, e>⌝ THEN Auto) }
Latex:
Latex:
1. [I] : Type
2. [E] : I {}\mrightarrow{} I {}\mrightarrow{} \mBbbP{}
3. i : I
4. x : coSet\{i:l\}
5. j : I
6. E[i;j]
7. x = (graph-cosets(I;i,j.E[i;j]) j)
\mvdash{} \mexists{}t:j:I \mtimes{} E[i;j]. (x = (graph-cosets(I;i,j.E[i;j]) (fst(t))))
By
Latex:
(RenameVar `e' (-2) THEN D 0 With \mkleeneopen{}<j, e>\mkleeneclose{} THEN Auto)
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