English
The relation of N-conjugacy on splittings induces an equivalence relation (setoid) on the split objects.
Русский
Отношение N-конъюгированности на разложениях порождает эквивалентность (setoid) на разложениях.
LaTeX
$$$S.IsConj \\text{ on } S.Splitting \\text{ is an equivalence relation}$$$
Lean4
/-- The setoid of splittings with `N`-conjugacy -/
@[to_additive /-- The setoid of splittings with `N`-conjugacy -/
]
def setoid : Setoid S.Splitting where
r := S.IsConj
iseqv :=
{ refl := refl S
symm := symm S
trans := trans S }