Metamath Proof Explorer

Theorem nn0cnd

Description: A nonnegative integer is a complex number. (Contributed by Mario Carneiro, 27-May-2016)

Ref Expression
Hypothesis nn0red.1 
|- ( ph -> A e. NN0 )
Assertion nn0cnd 
|- ( ph -> A e. CC )

Proof

Step Hyp Ref Expression
1 nn0red.1 
 |-  ( ph -> A e. NN0 )
2 1 nn0red 
 |-  ( ph -> A e. RR )
3 2 recnd 
 |-  ( ph -> A e. CC )