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Mirrors > Home > ILE Home > Th. List > 2a1i | Unicode version |
Description: Add two antecedents to a wff. (Contributed by Jeff Hankins, 4-Aug-2009.) (Proof shortened by Wolf Lammen, 23-Jul-2013.) |
Ref | Expression |
---|---|
2a1i.1 |
Ref | Expression |
---|---|
2a1i |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2a1i.1 | . . 3 | |
2 | 1 | a1i 9 | . 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: equvini 1751 sbcrext 3032 map1 6788 seq3id2 10458 fsum2d 11391 fsumabs 11421 fsumiun 11433 fprod2d 11579 cncfmptc 13341 |
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