Step
*
of Lemma
es-first-at_wf
∀[es:EO]. ∀[i:Id]. ∀[e':E]. ∀[P:{e:E| loc(e) = i ∈ Id} ─→ ℙ]. (e' is first@ i s.t. e.P[e] ∈ ℙ)
BY
{ ((Auto THEN Unfold `es-first-at` 0 THEN UnivCD) THENA Auto) }
1
1. es : EO
2. i : Id
3. e' : E
4. P : {e:E| loc(e) = i ∈ Id} ─→ ℙ
⊢ (loc(e') = i ∈ Id) ∧ P[e'] ∧ ∀e'<e'.¬P[e'] ∈ ℙ
Latex:
\mforall{}[es:EO]. \mforall{}[i:Id]. \mforall{}[e':E]. \mforall{}[P:\{e:E| loc(e) = i\} {}\mrightarrow{} \mBbbP{}]. (e' is first@ i s.t. e.P[e] \mmember{} \mBbbP{})
By
((Auto THEN Unfold `es-first-at` 0 THEN UnivCD) THENA Auto)
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