Metamath Proof Explorer
Description: Inference form of Theorem 19.21 of Margaris p. 90. See 19.21 and
19.21v . (Contributed by NM, 21-Jun-1993)
|
|
Ref |
Expression |
|
Hypothesis |
alrimiv.1 |
|- ( ph -> ps ) |
|
Assertion |
alrimiv |
|- ( ph -> A. x ps ) |
Proof
Step |
Hyp |
Ref |
Expression |
1 |
|
alrimiv.1 |
|- ( ph -> ps ) |
2 |
|
ax-5 |
|- ( ph -> A. x ph ) |
3 |
2 1
|
alrimih |
|- ( ph -> A. x ps ) |