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Related theorems GIF version |
| Description: Conjunction expressed with disjunction. |
| Ref | Expression |
|---|---|
| anor3 | (a⊥ ∩ b⊥ ) = (a ∪ b)⊥ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | oran 79 | . . 3 (a ∪ b) = (a⊥ ∩ b⊥ )⊥ | |
| 2 | 1 | ax-r1 34 | . 2 (a⊥ ∩ b⊥ )⊥ = (a ∪ b) |
| 3 | 2 | con3 65 | 1 (a⊥ ∩ b⊥ ) = (a ∪ b)⊥ |