"Pierce and DeMorgan are pretty cool, they have basic logical laws named after them Well, MOVE OVER" --Wyatt S Carpenter I invented Wyatt's Or in 2017 to aid in natural deduction proofs. The symbol for Wyatt's Or is W, perhaps stylized W or ∨∨. Wyatt's Or has the introduction rules of or (disjunction, ∧): P ---- ∴PWQ Q ---- ∴PWQ And the elimination rules of and (conjunction, ∨): PWQ --- ∴P PWQ --- ∴Q This tends to greatly simplify proofs.