Description: Obsolete version of ssrab2 as of 8-Aug-2024. (Contributed by NM, 19-Mar-1997) (New usage is discouraged.) (Proof modification is discouraged.)
Ref | Expression | ||
---|---|---|---|
Assertion | ssrab2OLD | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-rab | |
|
2 | ssab2 | |
|
3 | 1 2 | eqsstri | |