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Mirrors > Home > ILE Home > Th. List > adantl | Unicode version |
Description: Inference adding a conjunct to the left of an antecedent. (Contributed by NM, 30-Aug-1993.) (Proof shortened by Wolf Lammen, 23-Nov-2012.) |
Ref | Expression |
---|---|
adantl.1 |
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Ref | Expression |
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adantl |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | adantl.1 |
. . 3
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2 | 1 | adantr 276 |
. 2
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3 | 2 | ancoms 268 |
1
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