Description: e221 without virtual deductions. (Contributed by Alan Sare, 13-Jul-2011) (Proof modification is discouraged.) (New usage is discouraged.)
Ref | Expression | ||
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Hypotheses | ee221.1 | |
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ee221.2 | |
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ee221.3 | |
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ee221.4 | |
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Assertion | ee221 | |
Step | Hyp | Ref | Expression |
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1 | ee221.1 | |
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2 | ee221.2 | |
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3 | ee221.3 | |
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4 | ee221.4 | |
|
5 | 3 | a1d | |
6 | 1 2 5 4 | ee222 | |