English
As a consequence, (single V c j).PreservesZeroMorphisms holds for each j.
Русский
Следствие: (single V c j).PreservesZeroMorphisms выполняется для каждого j.
LaTeX
$$$$ \forall j, \ (\mathrm{single } V\ c\ j).\text{PreservesZeroMorphisms} $$$$
Lean4
/-- The functor `V ⥤ ChainComplex V ℕ` creating a chain complex supported in degree zero. -/
noncomputable abbrev single₀ : V ⥤ ChainComplex V ℕ :=
HomologicalComplex.single V (ComplexShape.down ℕ) 0