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Mirrors > Home > ILE Home > Th. List > sylnib | Unicode version |
Description: A mixed syllogism inference from an implication and a biconditional. (Contributed by Wolf Lammen, 16-Dec-2013.) |
Ref | Expression |
---|---|
sylnib.1 | |
sylnib.2 |
Ref | Expression |
---|---|
sylnib |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sylnib.1 | . 2 | |
2 | sylnib.2 | . . 3 | |
3 | 2 | a1i 9 | . 2 |
4 | 1, 3 | mtbid 629 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wi 4 wb 103 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 576 ax-in2 577 |
This theorem depends on definitions: df-bi 115 |
This theorem is referenced by: sylnibr 634 inssdif0im 3311 ordtriexmidlem2 4264 dmsn0el 4810 fidifsnen 6355 ltpopr 6785 caucvgprprlemnbj 6883 xrlttri3 8872 fzneuz 9118 |
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