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Mirrors > Home > MPE Home > Th. List > sylan9eq | Structured version Visualization version Unicode version |
Description: An equality transitivity deduction. (Contributed by NM, 8-May-1994.) (Proof shortened by Andrew Salmon, 25-May-2011.) |
Ref | Expression |
---|---|
sylan9eq.1 | |
sylan9eq.2 |
Ref | Expression |
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sylan9eq |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sylan9eq.1 | . 2 | |
2 | sylan9eq.2 | . 2 | |
3 | eqtr 2641 | . 2 | |
4 | 1, 2, 3 | syl2an 494 | 1 |
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