Logical operators are a central focus of logicians, and two important books with innovative thoughts on logic include Begriffsschrift (1879) by Gottlob Frege and The Laws of Thought by George Boole in 1854. The contribution of Boolean Algebra is memorable for the formalization of an algebra with the logical connectives AND, OR, and NOT. Before 1854, were there other logical operators, and if such an operator(s) existed what was the motivation for their creation?


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