English
If F is Mittag-Leffler and nonempty at each index, then every eventual range is nonempty.
Русский
Если F удовлетворяет условию Mittag-Leffler и в каждом индексе непусто, то каждый предельный диапазон непуст.
LaTeX
$$$ F.toEventualRanges.obj j \neq \emptyset $$$
Lean4
/-- A version of `CostructuredArrow.ofDiagEquivalence` with the roles of the first and second
projection swapped. -/
-- noncomputability is only for performance
noncomputable def ofDiagEquivalence' (X : T × T) :
CostructuredArrow (Functor.diag _) X ≌ CostructuredArrow (Over.forget X.2) X.1 :=
(ofDiagEquivalence X).trans <|
(ofCostructuredArrowProjEquivalence (𝟭 T) X.1 X.2).trans <|
CostructuredArrow.mapNatIso (Over.forget X.2).rightUnitor