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Mirrors > Home > MPE Home > Th. List > falxortru | Structured version Visualization version Unicode version |
Description: A identity. (Contributed by David A. Wheeler, 9-May-2015.) (Proof shortened by Wolf Lammen, 10-Jul-2020.) |
Ref | Expression |
---|---|
falxortru |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | xorcom 1467 | . 2 | |
2 | truxorfal 1529 | . 2 | |
3 | 1, 2 | bitri 264 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wb 196 wxo 1464 wtru 1484 wfal 1488 |
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-xor 1465 df-tru 1486 df-fal 1489 |
This theorem is referenced by: (None) |
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