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Mirrors > Home > MPE Home > Th. List > 3eqtr4rd | Structured version Visualization version Unicode version |
Description: A deduction from three chained equalities. (Contributed by NM, 21-Sep-1995.) |
Ref | Expression |
---|---|
3eqtr4d.1 | |
3eqtr4d.2 | |
3eqtr4d.3 |
Ref | Expression |
---|---|
3eqtr4rd |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3eqtr4d.3 | . . 3 | |
2 | 3eqtr4d.1 | . . 3 | |
3 | 1, 2 | eqtr4d 2659 | . 2 |
4 | 3eqtr4d.2 | . 2 | |
5 | 3, 4 | eqtr4d 2659 | 1 |
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