∫ Утверждение Mathlib
coeff_zero_X_mul
Mathlib.RingTheory.PowerSeries.Basic
URI: https://scilib.ai/kg/mathlib#PowerSeries.coeff_zero_X_mul
∫ Утверждение Mathlib
Mathlib.RingTheory.PowerSeries.Basic
URI: https://scilib.ai/kg/mathlib#PowerSeries.coeff_zero_X_mul