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Mirrors > Home > MPE Home > Th. List > pm4.64 | Unicode version |
Description: Theorem *4.64 of [WhiteheadRussell] p. 120. (Contributed by NM, 3-Jan-2005.) |
Ref | Expression |
---|---|
pm4.64 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-or 370 | . 2 | |
2 | 1 | bicomi 202 | 1 |
Colors of variables: wff setvar class |
Syntax hints: -. wn 3 -> wi 4
<-> wb 184 \/ wo 368 |
This theorem is referenced by: pm4.66 420 ioran 490 dfifp3 1383 fimaxg 7787 kmlem8 8558 axgroth6 9227 dfcon2 19920 hirstL-ax3 32087 bj-ifimimb 37715 bj-ifor123g 37725 |
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 185 df-or 370 |
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