Description: Obsolete version of elrabi as of 5-Aug-2024. (Contributed by Alexander van der Vekens, 31-Dec-2017) (New usage is discouraged.) (Proof modification is discouraged.)
Ref | Expression | ||
---|---|---|---|
Assertion | elrabiOLD |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | clelab | ||
2 | eleq1 | ||
3 | 2 | anbi1d | |
4 | 3 | simprbda | |
5 | 4 | exlimiv | |
6 | 1 5 | sylbi | |
7 | df-rab | ||
8 | 6 7 | eleq2s |