Description: The domain of an operation class abstraction is a relation. (Contributed by NM, 17-Mar-1995)
Ref | Expression | ||
---|---|---|---|
Assertion | reldmoprab | |- Rel dom { <. <. x , y >. , z >. | ph } |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dmoprab | |- dom { <. <. x , y >. , z >. | ph } = { <. x , y >. | E. z ph } |
|
2 | 1 | relopabiv | |- Rel dom { <. <. x , y >. , z >. | ph } |