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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 |
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Ref | Expression |
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bianabs |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bianabs.1 |
. 2
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2 | ibar 299 |
. 2
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3 | 1, 2 | bitr4d 190 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 |
This theorem depends on definitions: df-bi 116 |
This theorem is referenced by: ceqsrexv 2819 opelopab2a 4195 ov 5898 ovg 5917 ltresr 7671 |
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