Description: Inference from commutative law for inequality. (Contributed by NM, 17-Oct-2012)
Ref | Expression | ||
---|---|---|---|
Hypothesis | necomi.1 | |
|
Assertion | necomi | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | necomi.1 | |
|
2 | necom | |
|
3 | 1 2 | mpbi | |