Description: Inference of ordered pair abstraction subclass from implication. (Contributed by NM, 19-Jan-2014) (Revised by Mario Carneiro, 24-Jun-2014)
Ref | Expression | ||
---|---|---|---|
Hypothesis | ssopab2dv.1 | |
|
Assertion | ssopab2dv | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssopab2dv.1 | |
|
2 | 1 | alrimivv | |
3 | ssopab2 | |
|
4 | 2 3 | syl | |