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Mirrors > Home > ILE Home > Th. List > pm5.74d | Unicode version |
Description: Distribution of implication over biconditional (deduction rule). (Contributed by NM, 21-Mar-1996.) |
Ref | Expression |
---|---|
pm5.74d.1 |
Ref | Expression |
---|---|
pm5.74d |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pm5.74d.1 | . 2 | |
2 | pm5.74 168 | . 2 | |
3 | 1, 2 | sylib 127 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 98 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 |
This theorem depends on definitions: df-bi 110 |
This theorem is referenced by: imbi2d 219 imim21b 241 pm5.74da 417 cbval2 1796 dfiin2g 3690 brecop 6196 dom2lem 6252 nn0ind-raph 8355 |
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