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Mirrors > Home > ILE Home > Th. List > mp1i | Unicode version |
Description: Drop and replace an antecedent. (Contributed by Stefan O'Rear, 29-Jan-2015.) |
Ref | Expression |
---|---|
mp1i.a | |
mp1i.b |
Ref | Expression |
---|---|
mp1i |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mp1i.a | . . 3 | |
2 | mp1i.b | . . 3 | |
3 | 1, 2 | ax-mp 5 | . 2 |
4 | 3 | a1i 9 | 1 |
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