Description: Positive integer ordering relation. (Contributed by NM, 13-Aug-2001) (Proof shortened by Mario Carneiro, 16-May-2014)
Ref | Expression | ||
---|---|---|---|
Assertion | nnleltp1 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nnz | |
|
2 | nnz | |
|
3 | zleltp1 | |
|
4 | 1 2 3 | syl2an | |