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two minor fixes #1886

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two minor fixes #1886

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57bafd3
fixes #1885
affeldt-aist Mar 6, 2026
07d83f2
fixes #1880
affeldt-aist Mar 6, 2026
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3 changes: 3 additions & 0 deletions CHANGELOG_UNRELEASED.md
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Expand Up @@ -256,6 +256,9 @@
- in `lebesgue_integral_nonneg.v`:
+ lemma `integral_setU_EFin`

- in `classical_sets.v`:
+ lemma `mem_setT`

### Removed

- in `weak_topology.v`:
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1 change: 1 addition & 0 deletions classical/classical_sets.v
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Expand Up @@ -507,6 +507,7 @@ Implicit Types A B C D : set T.

Lemma mem_set {A} {u : T} : A u -> u \in A. Proof. by rewrite inE. Qed.
Lemma set_mem {A} {u : T} : u \in A -> A u. Proof. by rewrite inE. Qed.
#[deprecated(since="mathcomp-analysis 1.16.0", use=in_setT)]
Lemma mem_setT (u : T) : u \in [set: T]. Proof. by rewrite inE. Qed.
Lemma mem_setK {A} {u : T} : cancel (@mem_set A u) set_mem. Proof. by []. Qed.
Lemma set_memK {A} {u : T} : cancel (@set_mem A u) mem_set. Proof. by []. Qed.
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2 changes: 1 addition & 1 deletion theories/derive.v
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Expand Up @@ -76,7 +76,7 @@ Definition diff (F : filter_on V) (_ : phantom (set (set V)) F) (f : V -> W) :=
Local Notation "''d' f x" := (@diff _ (Phantom _ (nbhs x)) f).

Fact diff_key : forall T, T -> unit. Proof. by constructor. Qed.
CoInductive differentiable_def (f : V -> W) (x : filter_on V)
Variant differentiable_def (f : V -> W) (x : filter_on V)
(phF : phantom (set (set V)) x) : Prop := DifferentiableDef of
(continuous ('d f x) /\
f = cst (f (lim x)) + 'd f x \o center (lim x) +o_x (center (lim x))).
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