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Mirrors > Home > ILE Home > Th. List > a1i13 | Unicode version |
Description: Add two antecedents to a wff. (Contributed by Jeff Hankins, 4-Aug-2009.) |
Ref | Expression |
---|---|
a1i13.1 |
Ref | Expression |
---|---|
a1i13 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | a1i13.1 | . . 3 | |
2 | 1 | a1d 22 | . 2 |
3 | 2 | a1i 9 | 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: xpfi 6903 seq3fveq2 10412 seq3shft2 10416 seq3split 10422 |
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