English
Subtraction in the fractional context corresponds to subtraction in RatFunc, mirroring the H-substructure.
Русский
Расширение в FractionRing сохраняет операцию деления (вычитание) в RatFunc, согласуя структуру.
LaTeX
$$$\forall p,q \in \mathrm{FractionRing}(K[X]),\; \operatorname{ofFractionRing}(p-q) = \operatorname{ofFractionRing}(p) - \operatorname{ofFractionRing}(q)$$$
Lean4
theorem ofFractionRing_sub (p q : FractionRing K[X]) : ofFractionRing (p - q) = ofFractionRing p - ofFractionRing q :=
(sub_def _ _).symm