Metamath Proof Explorer

Theorem 25nn0

Description: 25 is a nonnegative integer. (Contributed by Umit Teoman Dogan, 10-Jun-2026)

Ref Expression
Assertion 25nn0 
|- ; 2 5 e. NN0

Proof

Step Hyp Ref Expression
1 2nn0 
 |-  2 e. NN0
2 5nn0 
 |-  5 e. NN0
3 1 2 deccl 
 |-  ; 2 5 e. NN0