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Mirrors > Home > ILE Home > Th. List > eqtr4d | Unicode version |
Description: An equality transitivity equality deduction. (Contributed by NM, 18-Jul-1995.) |
Ref | Expression |
---|---|
eqtr4d.1 | |
eqtr4d.2 |
Ref | Expression |
---|---|
eqtr4d |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqtr4d.1 | . 2 | |
2 | eqtr4d.2 | . . 3 | |
3 | 2 | eqcomd 2171 | . 2 |
4 | 1, 3 | eqtrd 2198 | 1 |
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