Step
*
of Lemma
matrix-det-is-determinant
∀[r:CRng]. ∀[n:ℕ]. ∀[M:Matrix(n;n;r)]. (|M| = (determinant(n;r) M) ∈ |r|)
BY
{ (InstLemma `det-fun-is-determinant` []
THEN RepeatFor 2 (ParallelLast')
THEN (D -1 With ⌜λm.|m|⌝ THENA (Auto THEN BLemma `matrix-det-is-det-fun` THEN Auto))) }
1
1. [r] : CRng
2. [n] : ℕ
3. (λm.|m|) = (λM.(((λm.|m|) I) * (determinant(n;r) M))) ∈ (Matrix(n;n;r) ⟶ |r|)
⊢ ∀[M:Matrix(n;n;r)]. (|M| = (determinant(n;r) M) ∈ |r|)
Latex:
Latex:
\mforall{}[r:CRng]. \mforall{}[n:\mBbbN{}]. \mforall{}[M:Matrix(n;n;r)]. (|M| = (determinant(n;r) M))
By
Latex:
(InstLemma `det-fun-is-determinant` []
THEN RepeatFor 2 (ParallelLast')
THEN (D -1 With \mkleeneopen{}\mlambda{}m.|m|\mkleeneclose{} THENA (Auto THEN BLemma `matrix-det-is-det-fun` THEN Auto)))
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