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Related theorems Unicode version |
| Description: Equality deduction for a binary relation. |
| Ref | Expression |
|---|---|
| breq1d.1 |
|
| breq12d.2 |
|
| Ref | Expression |
|---|---|
| breq12d |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | breq1d.1 |
. . 3
| |
| 2 | 1 | breq1d 2619 |
. 2
|
| 3 | breq12d.2 |
. . 3
| |
| 4 | 3 | breq2d 2620 |
. 2
|
| 5 | 2, 4 | bitrd 526 |
1
|