Description: 5 is less than 7. (Contributed by Mario Carneiro, 15-Sep-2013)
Ref | Expression | ||
---|---|---|---|
Assertion | 5lt7 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 5lt6 | |
|
2 | 6lt7 | |
|
3 | 5re | |
|
4 | 6re | |
|
5 | 7re | |
|
6 | 3 4 5 | lttri | |
7 | 1 2 6 | mp2an | |