Description: Obsolete version of 0domg as of 29-Nov-2024. (Contributed by NM, 26-Oct-2003) (Revised by Mario Carneiro, 26-Apr-2015) (Proof modification is discouraged.) (New usage is discouraged.)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | 0domgOLD | |- ( A e. V -> (/) ~<_ A ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0ss | |- (/) C_ A |
|
| 2 | ssdomg | |- ( A e. V -> ( (/) C_ A -> (/) ~<_ A ) ) |
|
| 3 | 1 2 | mpi | |- ( A e. V -> (/) ~<_ A ) |