Metamath Proof Explorer

Axiom ax-icn

Description: _i is a complex number. Axiom 3 of 22 for real and complex numbers, justified by theorem axicn . (Contributed by NM, 1-Mar-1995)

Ref Expression
Assertion ax-icn i

Detailed syntax breakdown

Step Hyp Ref Expression
0 ci class i
1 cc class
2 0 1 wcel wff i