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affeldt-aist merged 2 commits into from
Aug 9, 2026
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making is_derive_mx instance causes loops #2074

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making is_derive_mx instance causes loops
affeldt-aist Aug 6, 2026
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affeldt-aist Aug 9, 2026
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2 changes: 1 addition & 1 deletion theories/derive.v
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Expand Up @@ -2408,7 +2408,7 @@ rewrite (le_trans (ler_normD _ _))// (splitr e) lerD//.
by rewrite sub0r normrN; near: x; exact: dnbhs0_lt.
Unshelve. all: by end_near. Qed.

Global Instance is_derive_mx {m n : nat} (M : V -> 'M[R]_(m, n))
Lemma is_derive_mx {m n : nat} (M : V -> 'M[R]_(m, n))
(dM : 'M[R]_(m, n)) (x v : V) :
(forall i j, is_derive x v (fun t => M t i j) (dM i j)) ->
is_derive x v M dM.
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