Theorem MvPowerSeries.HasSubst.X_zero

Modification history

2026-06-30 06:44
Mathlib/RingTheory/MvPowerSeries/Substitution.lean
feat(FormalGroup): `F(X,0)=X` and `F(0,X)=X` (#38052) …
Added MvPowerSeries.HasSubst.X_zeroView on Github →