Metamath Proof Explorer

Theorem 7pos

Description: The number 7 is positive. (Contributed by NM, 27-May-1999) (Proof shortened by Umit Teoman Dogan, 10-Jun-2026)

Ref Expression
Assertion 7pos 
|- 0 < 7

Proof

Step Hyp Ref Expression
1 7nn 
 |-  7 e. NN
2 1 nngt0i 
 |-  0 < 7