English
In a symmetric monoidal category with braiding, the left distributivity equals the right distributivity up to braiding; the braiding maps adjust the two distributivities.
Русский
В симметричной моноидальной категории braiding переводит левое распределение в правое, позволяя тождественно сопоставлять distributivity.
LaTeX
$$$(coprodComparison (tensorLeft X) Y Z) \\; ≪≫ \\; (β_X (Y ⨿ Z)).hom = (coprod.map (β_X Y).hom (β_X Z).hom) ≪≫ (coprodComparison (tensorRight X) Y Z)$$$
Lean4
/-- A left distributive symmetric monoidal category is distributive. -/
theorem isMonoidalDistrib_of_isMonoidalLeftDistrib [SymmetricCategory C] [IsMonoidalLeftDistrib C] : IsMonoidalDistrib C
where
preservesBinaryCoproducts_tensorRight
X := preservesColimitsOfShape_of_natIso (BraidedCategory.tensorLeftIsoTensorRight X)