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Mirrors > Home > MPE Home > Th. List > 3eqtrrd | Structured version Visualization version Unicode version |
Description: A deduction from three chained equalities. (Contributed by NM, 4-Aug-2006.) (Proof shortened by Andrew Salmon, 25-May-2011.) |
Ref | Expression |
---|---|
3eqtrd.1 | |
3eqtrd.2 | |
3eqtrd.3 |
Ref | Expression |
---|---|
3eqtrrd |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3eqtrd.1 | . . 3 | |
2 | 3eqtrd.2 | . . 3 | |
3 | 1, 2 | eqtrd 2656 | . 2 |
4 | 3eqtrd.3 | . 2 | |
5 | 3, 4 | eqtr2d 2657 | 1 |
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