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Mirrors > Home > MPE Home > Th. List > pm5.42 | Structured version Visualization version Unicode version |
Description: Theorem *5.42 of [WhiteheadRussell] p. 125. (Contributed by NM, 3-Jan-2005.) |
Ref | Expression |
---|---|
pm5.42 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ibar 525 | . . 3 | |
2 | 1 | imbi2d 330 | . 2 |
3 | 2 | pm5.74i 260 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wb 196 wa 384 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
This theorem depends on definitions: df-bi 197 df-an 386 |
This theorem is referenced by: anc2l 578 imdistan 725 |
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