Step
*
1
2
of Lemma
ctt-opr-is-implies
.....falsecase.....
1. k : {k:Atom| (k ∈ ``opid nType nterm univ``)}
2. f1 : if k =a "nType" then Type
if k =a "nterm" then T:Type × T
else ℕ
fi
3. s : Atom
4. ↑(k =a "opid" ∧b f1 =a s)
5. ¬(k = "opid" ∈ Atom)
⊢ <k, f1> = <"opid", s> ∈ (Atom × Atom)
BY
{ (Subst' k =a "opid" ~ ff -2 THENA Auto) }
1
1. k : {k:Atom| (k ∈ ``opid nType nterm univ``)}
2. f1 : if k =a "nType" then Type
if k =a "nterm" then T:Type × T
else ℕ
fi
3. s : Atom
4. ↑(ff ∧b f1 =a s)
5. ¬(k = "opid" ∈ Atom)
⊢ <k, f1> = <"opid", s> ∈ (Atom × Atom)
Latex:
Latex:
.....falsecase.....
1. k : \{k:Atom| (k \mmember{} ``opid nType nterm univ``)\}
2. f1 : if k =a "nType" then Type
if k =a "nterm" then T:Type \mtimes{} T
else \mBbbN{}
fi
3. s : Atom
4. \muparrow{}(k =a "opid" \mwedge{}\msubb{} f1 =a s)
5. \mneg{}(k = "opid")
\mvdash{} <k, f1> = <"opid", s>
By
Latex:
(Subst' k =a "opid" \msim{} ff -2 THENA Auto)
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