Metamath Proof Explorer


Theorem 2pos

Description: The number 2 is positive. (Contributed by NM, 27-May-1999) (Proof shortened by Umit Teoman Dogan, 10-Jun-2026)

Ref Expression
Assertion 2pos 0 < 2

Proof

Step Hyp Ref Expression
1 2nn 2
2 1 nngt0i 0 < 2