Metamath Proof Explorer


Theorem halfcn

Description: One-half is a complex number. (Contributed by David A. Wheeler, 8-Dec-2018)

Ref Expression
Assertion halfcn ( 1 / 2 ) ∈ ℂ

Proof

Step Hyp Ref Expression
1 2cn 2 ∈ ℂ
2 2ne0 2 ≠ 0
3 1 2 reccli ( 1 / 2 ) ∈ ℂ