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| Mirrors > Home > ILE Home > Th. List > breqtrd | Unicode version | ||
| Description: Substitution of equal classes into a binary relation. (Contributed by NM, 24-Oct-1999.) |
| Ref | Expression |
|---|---|
| breqtrd.1 |
|
| breqtrd.2 |
|
| Ref | Expression |
|---|---|
| breqtrd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | breqtrd.1 |
. 2
| |
| 2 | breqtrd.2 |
. . 3
| |
| 3 | 2 | breq2d 4046 |
. 2
|
| 4 | 1, 3 | mpbid 147 |
1
|
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