Description: The range of a restricted operation class abstraction. (Contributed by Scott Fenton, 21-Mar-2012)
Ref | Expression | ||
---|---|---|---|
Assertion | rnoprab2 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rnoprab | |
|
2 | r2ex | |
|
3 | 2 | abbii | |
4 | 1 3 | eqtr4i | |