Step
*
1
of Lemma
decidable__llex-le
1. [A] : Type
2. [<] : A ⟶ A ⟶ ℙ
3. ∀a,b:A. (Dec(<[a;b]) ∧ Dec(a = b ∈ A))
4. L1 : A List
5. L2 : A List
6. Dec(L1 llex(A;a,b.<[a;b]) L2)
⊢ Dec(L1 llex-le(A;a,b.<[a;b]) L2)
BY
{ (RepUR ``llex-le`` 0 THEN D -1 THEN Auto) }
Latex:
Latex:
1. [A] : Type
2. [<] : A {}\mrightarrow{} A {}\mrightarrow{} \mBbbP{}
3. \mforall{}a,b:A. (Dec(<[a;b]) \mwedge{} Dec(a = b))
4. L1 : A List
5. L2 : A List
6. Dec(L1 llex(A;a,b.<[a;b]) L2)
\mvdash{} Dec(L1 llex-le(A;a,b.<[a;b]) L2)
By
Latex:
(RepUR ``llex-le`` 0 THEN D -1 THEN Auto)
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