fact: Definition skewmonoidal_alpha_lambda_eq (V : skewmonoidal_category) : ∏ (a b : V), α' I a b · λ' (a ⊗ b) = λ' a #⊗ id b := pr1 (pr2 (pr2 eq)).
imports: UniMath.Foundations.PartD UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.ProductCategory UniMath.CategoryTheory.PrecategoryBinProduct UniMath.CategoryTheory.whiskering