Theorem 1tiei

Description: 1 times _i equals _i . (Contributed by SN, 25-Apr-2025)

	Ref	Expression
Assertion	1tiei	⊢ ( 1 · i ) = i

Proof

Step	Hyp	Ref	Expression
1		ax-icn	⊢ i ∈ ℂ
2	1	mullidi	⊢ ( 1 · i ) = i