Webb-operator or Peirce arrow, the sign for NOR, confusingly, "⊥" is also the sign for contradiction or absurdity.
Confusingly, "⊥" is also the sign for contradiction or absurdity. Webb-operator or Peirce arrow, the sign for NOR.
Webb-operator or Peirce arrow, the sign for NOR. Confusingly, "⊥" is also the sign for contradiction or absurdity.
Webb-operator or Peirce arrow, the sign for NOR. Confusingly, "⊥" is also the sign for contradiction or absurdity.