English
There is a straightforward translation functor that converts a PreEnvelGroupRel' relation into the corresponding PreEnvelGroupRel relation.
Русский
Существует тривиальный переходник, переводящий отношение PreEnvelGroupRel' в соответствующее PreEnvelGroupRel.
LaTeX
$$$\forall R, a,b:\ PreEnvelGroupRel'\!\_R\ a\ b \Rightarrow PreEnvelGroupRel\_R\ a\ b.$$$
Lean4
/-- A quick way to convert a `PreEnvelGroupRel'` to a `PreEnvelGroupRel`.
-/
theorem rel {R : Type u} [Rack R] {a b : PreEnvelGroup R} : PreEnvelGroupRel' R a b → PreEnvelGroupRel R a b :=
PreEnvelGroupRel.rel