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Metamath Proof Explorer
Description: The number 2 is nonzero. (Contributed by NM, 9-Nov-2007)
|
|
Ref |
Expression |
|
Assertion |
2ne0 |
|- 2 =/= 0 |
Proof
| Step |
Hyp |
Ref |
Expression |
| 1 |
|
2nn |
|- 2 e. NN |
| 2 |
1
|
nnne0i |
|- 2 =/= 0 |