The conjecture that the equations for a Robbins algebra, commutativity, associativity, and the Robbins axiom
where denotes NOT and denotes OR, imply those for a Boolean algebra. The conjecture was finally proven using a computer (McCune 1997).
The conjecture that the equations for a Robbins algebra, commutativity, associativity, and the Robbins axiom
where denotes NOT and denotes OR, imply those for a Boolean algebra. The conjecture was finally proven using a computer (McCune 1997).
Weisstein, Eric W. "Robbins Conjecture." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/RobbinsConjecture.html