![]() |
New Foundations Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > NFE Home > Th. List > exbii | Unicode version |
Description: Inference adding existential quantifier to both sides of an equivalence. (Contributed by NM, 24-May-1994.) |
Ref | Expression |
---|---|
exbii.1 |
![]() ![]() ![]() ![]() ![]() ![]() |
Ref | Expression |
---|---|
exbii |
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | exbi 1581 |
. 2
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |
2 | exbii.1 |
. 2
![]() ![]() ![]() ![]() ![]() ![]() | |
3 | 1, 2 | mpg 1548 |
1
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Copyright terms: Public domain | W3C validator |