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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syl332anc.9 |
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Assertion |
syl332anc |
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Proof
Step |
Hyp |
Ref |
Expression |
1 |
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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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syl332anc.9 |
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10 |
7 8
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jca |
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11 |
1 2 3 4 5 6 10 9
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syl331anc |
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