Description: 2 is less than 7. (Contributed by Mario Carneiro, 15-Sep-2013)
Ref | Expression | ||
---|---|---|---|
Assertion | 2lt7 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2lt3 | |
|
2 | 3lt7 | |
|
3 | 2re | |
|
4 | 3re | |
|
5 | 7re | |
|
6 | 3 4 5 | lttri | |
7 | 1 2 6 | mp2an | |