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Related theorems GIF version |
| Description: Disjunction expressed with conjunction. |
| Ref | Expression |
|---|---|
| oran3 | (a⊥ ∪ b⊥ ) = (a ∩ b)⊥ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-a 39 | . . 3 (a ∩ b) = (a⊥ ∪ b⊥ )⊥ | |
| 2 | 1 | ax-r1 34 | . 2 (a⊥ ∪ b⊥ )⊥ = (a ∩ b) |
| 3 | 2 | con3 65 | 1 (a⊥ ∪ b⊥ ) = (a ∩ b)⊥ |
| Colors of variables: term |
| Syntax hints: = wb 1 ⊥ wn 4 ∪ wo 6 ∩ wa 7 |
| This theorem is referenced by: mccune2 239 wql2lem5 284 oaidlem1 286 womle2a 287 nom15 304 nom20 305 nom21 306 nom22 307 nom23 308 nom24 309 nom25 310 go1 335 2vwomlem 347 wdf-c2 366 ska2 414 ska4 415 u3lemnana 629 u5lemnana 631 u4lemnab 635 u5lemnab 636 u2lemnoa 643 u3lemnoa 644 u4lemnoa 645 u5lemnoa 646 u1lemnonb 657 u3lemnonb 659 u4lemnonb 660 u5lemnonb 661 u3lem3n 736 u4lem3n 737 u5lem3n 738 u4lem5 746 u2lem7n 757 u3lem13a 771 u3lem13b 772 u3lemax4 778 u3lemax5 779 test 784 3vcom 795 1oai1 803 2oath1i1 809 mlalem 814 sadm3 820 elimconslem 849 mh 861 mlaconjolem 867 mlaconjo 868 oaidlem2 911 oaidlem2g 912 oa4v3v 914 oa3to4lem6 930 oa6todual 932 oa6fromdual 933 oa8todual 951 |
| This theorem was proved from axioms: ax-a1 29 ax-r1 34 ax-r2 35 ax-r4 36 |
| This theorem depends on definitions: df-a 39 |