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Mirrors > Home > ILE Home > Th. List > bianabs | Unicode version |
Description: Absorb a hypothesis into the second member of a biconditional. (Contributed by FL, 15-Feb-2007.) |
Ref | Expression |
---|---|
bianabs.1 |
Ref | Expression |
---|---|
bianabs |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bianabs.1 | . 2 | |
2 | ibar 295 | . 2 | |
3 | 1, 2 | bitr4d 189 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 102 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 |
This theorem depends on definitions: df-bi 115 |
This theorem is referenced by: ceqsrexv 2725 opelopab2a 4020 ov 5640 ovg 5659 ltresr 7007 |
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