theorem
L21 ↗powerClass_mul
ClassFieldTheory.powerClass_mul
The class of a product is the product of the classes.
Source context 2 commands
Surrounding namespaces, section variables, and local commands at this declaration.
namespace ClassFieldTheory
universe uLean source · statement
theorem powerClass_mul
(K : Type u) [Field K] (n : ℕ+) (a b : Kˣ) :
powerClass K n (a * b) = powerClass K n a * powerClass K n b