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Mirrors > Home > MPE Home > Th. List > orcd | Unicode version |
Description: Deduction introducing a
disjunct. A translation of natural deduction
rule \/ IR (\/ insertion right), see natded 25124. (Contributed
by NM, 20-Sep-2007.) |
Ref | Expression |
---|---|
orcd.1 |
Ref | Expression |
---|---|
orcd |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | orcd.1 | . 2 | |
2 | orc 385 | . 2 | |
3 | 1, 2 | syl 16 | 1 |
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