Metamath Proof Explorer
Description: Syllogism combined with contraction. (Contributed by NM, 11-Mar-2012)
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Ref |
Expression |
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Hypotheses |
syl3anc.1 |
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syl3anc.2 |
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syl3anc.3 |
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syl3Xanc.4 |
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syl23anc.5 |
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syl33anc.6 |
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syl133anc.7 |
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syl233anc.8 |
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syl323anc.9 |
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Assertion |
syl323anc |
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Proof
| Step |
Hyp |
Ref |
Expression |
| 1 |
|
syl3anc.1 |
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| 2 |
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syl3anc.2 |
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| 3 |
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syl3anc.3 |
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| 4 |
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syl3Xanc.4 |
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| 5 |
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syl23anc.5 |
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| 6 |
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syl33anc.6 |
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| 7 |
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syl133anc.7 |
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| 8 |
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syl233anc.8 |
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| 9 |
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syl323anc.9 |
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| 10 |
4 5
|
jca |
|
| 11 |
1 2 3 10 6 7 8 9
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syl313anc |
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