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Related theorems Unicode version |
| Description: Disjunction expressed with conjunction. |
| Ref | Expression |
|---|---|
| oran |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-a1 29 |
. 2
| |
| 2 | ax-a1 29 |
. . 3
| |
| 3 | ax-a1 29 |
. . 3
| |
| 4 | 2, 3 | 2or 67 |
. 2
|
| 5 | df-a 39 |
. . 3
| |
| 6 | 5 | ax-r4 36 |
. 2
|
| 7 | 1, 4, 6 | 3tr1 60 |
1
|
| Colors of variables: term |
| Syntax hints: |
| This theorem is referenced by: anor3 82 dfb 86 dfnb 87 mi 117 lecon 146 wlem3.1 202 wwcomd 206 wwfh1 208 wwfh2 209 wwfh3 210 wwfh4 211 ska2b 219 ka4lemo 220 ska10 230 ni31 242 ud2lem0c 270 ud4lem0c 272 ud5lem0c 273 nom12 301 nom13 302 2vwomlem 347 wlecon 377 wcomd 400 wcomdr 403 wfh1 405 wfh2 406 wfh3 407 wfh4 408 ska2 414 ska4 415 wom2 416 lem3.1 425 comd 438 comdr 448 fh1 451 fh2 452 fh3 453 fh4 454 i3bi 478 ni32 484 lem4 493 i3orlem5 538 ud1lem2 543 ud2lem1 545 ud2lem2 546 ud3lem1a 548 ud3lem1b 549 ud3lem1c 550 ud3lem2 553 ud3lem3d 557 ud4lem1a 559 ud4lem2 564 ud5lem1b 569 ud5lem1 571 ud5lem3c 575 u2lemoa 603 u3lemob 614 u3lemnana 629 u5lemnana 631 u1lemnanb 637 u2lemnanb 638 u3lemnanb 639 u4lemnanb 640 u5lemnanb 641 u2lem1 717 u4lem1n 724 u3lem11 768 u3lem15 777 1oa 802 2oalem1 807 2oath1 808 bi3 821 mlaconj4 826 mlaconjo 868 mhcor1 870 oa6fromdual 933 |
| This theorem was proved from axioms: ax-a1 29 ax-a2 30 ax-r1 34 ax-r2 35 ax-r4 36 ax-r5 37 |
| This theorem depends on definitions: df-a 39 |