Metamath Proof Explorer
Description: Inference adding four restricted universal quantifiers to both sides of
an equivalence. (Contributed by Scott Fenton, 28-Feb-2025)
|
|
Ref |
Expression |
|
Hypothesis |
4ralbii.1 |
|
|
Assertion |
4ralbii |
|
Proof
Step |
Hyp |
Ref |
Expression |
1 |
|
4ralbii.1 |
|
2 |
1
|
ralbii |
|
3 |
2
|
3ralbii |
|