Theorem PowerSeries.coeff_one_substInvOfIsUnit

Modification history

2026-04-30 12:24
Mathlib/RingTheory/PowerSeries/Substitution.lean
feat(PowerSeries): `substInv` add add a variant assuming `IsUnit` (#37860) …
Added PowerSeries.coeff_one_substInvOfIsUnitView on Github →