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Mirrors > Home > MPE Home > Th. List > Mathboxes > 3orit | Structured version Visualization version Unicode version |
Description: Closed form of 3ori 1388. (Contributed by Scott Fenton, 20-Apr-2011.) |
Ref | Expression |
---|---|
3orit |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-3or 1038 | . 2 | |
2 | df-or 385 | . 2 | |
3 | ioran 511 | . . 3 | |
4 | 3 | imbi1i 339 | . 2 |
5 | 1, 2, 4 | 3bitri 286 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wn 3 wi 4 wb 196 wo 383 wa 384 w3o 1036 |
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-or 385 df-an 386 df-3or 1038 |
This theorem is referenced by: (None) |
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