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Mirrors > Home > MPE Home > Th. List > eqbrtrd | Structured version Visualization version Unicode version |
Description: Substitution of equal classes into a binary relation. (Contributed by NM, 8-Oct-1999.) |
Ref | Expression |
---|---|
eqbrtrd.1 | |
eqbrtrd.2 |
Ref | Expression |
---|---|
eqbrtrd |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqbrtrd.2 | . 2 | |
2 | eqbrtrd.1 | . . 3 | |
3 | 2 | breq1d 4663 | . 2 |
4 | 1, 3 | mpbird 247 | 1 |
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