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Mirrors > Home > ILE Home > Th. List > 2a1d | Unicode version |
Description: Deduction introducing two antecedents. Two applications of a1d 22. Deduction associated with 2a1 25 and 2a1i 27. (Contributed by BJ, 10-Aug-2020.) |
Ref | Expression |
---|---|
2a1d.1 |
Ref | Expression |
---|---|
2a1d |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2a1d.1 | . . 3 | |
2 | 1 | a1d 22 | . 2 |
3 | 2 | a1d 22 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 |
This theorem is referenced by: 2a1 25 nn0o1gt2 11613 |
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