Description: 9 is less than 10. (Contributed by Mario Carneiro, 8-Feb-2015) (Revised by AV, 8-Sep-2021)
Ref | Expression | ||
---|---|---|---|
Assertion | 9lt10 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 9re | |
|
2 | 1 | ltp1i | |
3 | 9p1e10 | |
|
4 | 2 3 | breqtri | |