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Mirrors > Home > MPE Home > Th. List > 3brtr3d | Structured version Visualization version Unicode version |
Description: Substitution of equality into both sides of a binary relation. (Contributed by NM, 18-Oct-1999.) |
Ref | Expression |
---|---|
3brtr3d.1 | |
3brtr3d.2 | |
3brtr3d.3 |
Ref | Expression |
---|---|
3brtr3d |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3brtr3d.1 | . 2 | |
2 | 3brtr3d.2 | . . 3 | |
3 | 3brtr3d.3 | . . 3 | |
4 | 2, 3 | breq12d 4666 | . 2 |
5 | 1, 4 | mpbid 222 | 1 |
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