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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 3999 | . 2 |
4 | 1, 3 | mpbid 146 | 1 |
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