Description: Existential specialization, using implicit substitution. (Contributed by NM, 14-Aug-1994) Avoid ax-10 , ax-11 . (Revised by Wolf Lammen, 25-Aug-2023)
Ref | Expression | ||
---|---|---|---|
Hypothesis | spcgv.1 | |
|
Assertion | spcegv | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | spcgv.1 | |
|
2 | elisset | |
|
3 | 1 | biimprcd | |
4 | 3 | eximdv | |
5 | 2 4 | syl5com | |