Step
*
of Lemma
ni-min-identity
∀[x:ℕ∞]. (ni-min(x;∞) = x ∈ ℕ∞)
BY
{ (Auto
THEN (Assert ni-min(x;∞) ∈ ℕ∞ BY
Auto)
THEN (MemTypeHD (-1) THENA Auto)
THEN EqTypeCD
THEN Auto
THEN Thin (-1)) }
1
1. x : ℕ∞
2. ni-min(x;∞) = ni-min(x;∞) ∈ (ℕ ⟶ 𝔹)
⊢ ni-min(x;∞) = x ∈ (ℕ ⟶ 𝔹)
Latex:
Latex:
\mforall{}[x:\mBbbN{}\minfty{}]. (ni-min(x;\minfty{}) = x)
By
Latex:
(Auto
THEN (Assert ni-min(x;\minfty{}) \mmember{} \mBbbN{}\minfty{} BY
Auto)
THEN (MemTypeHD (-1) THENA Auto)
THEN EqTypeCD
THEN Auto
THEN Thin (-1))
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