fact: Definition skewmonoidal_unitl_ax (V : skewmonoidal_data) {x y : V} (f : x --> y) : (identity I) #⊗ f · λ' y = λ' x · f := nat_trans_ax (skewmonoidal_unitl_nt V) _ _ f.
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