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Mirrors > Home > ILE Home > Th. List > eqtrd | Unicode version |
Description: An equality transitivity deduction. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
eqtrd.1 |
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eqtrd.2 |
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Ref | Expression |
---|---|
eqtrd |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqtrd.1 |
. 2
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2 | eqtrd.2 |
. . 3
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3 | 2 | eqeq2d 2189 |
. 2
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4 | 1, 3 | mpbid 147 |
1
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