English
There is an instance asserting that for P = IsJointlySurjectivePreserving and IsStableUnderBaseChange, the precoverage is stable under base change.
Русский
Существует экземпляр, утверждающий, что для P = IsJointlySurjectivePreserving и IsStableUnderBaseChange предпокрытие устойчиво к базовым изменениям.
LaTeX
$$instance [IsJointlySurjectivePreserving P] [P.IsStableUnderBaseChange] : (precoverage P).IsStableUnderBaseChange$$
Lean4
instance [P.IsStableUnderComposition] : (precoverage P).IsStableUnderComposition := by dsimp only [precoverage];
infer_instance
