Description: Equality deduction for restricted unique existential quantifier. (Contributed by NM, 5-Apr-2004)
Ref | Expression | ||
---|---|---|---|
Hypothesis | raleqd.1 | |
|
Assertion | reueqd | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | raleqd.1 | |
|
2 | reueq1 | |
|
3 | 1 | reubidv | |
4 | 2 3 | bitrd | |