Description: 0 is less than or equal to 1. (Contributed by Mario Carneiro, 29-Apr-2015)
Ref | Expression | ||
---|---|---|---|
Assertion | 0le1 | $${\u22a2}0\le 1$$ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0re | $${\u22a2}0\in \mathbb{R}$$ | |
2 | 1re | $${\u22a2}1\in \mathbb{R}$$ | |
3 | 0lt1 | $${\u22a2}0<1$$ | |
4 | 1 2 3 | ltleii | $${\u22a2}0\le 1$$ |