In fact, when propositional logic was first formalised [1] George Boole gave "and" and "or" the same meaning, denoted by the symbol "+". [1]: https://t.co/nBYX

In fact, when propositional logic was first formalised [1] George Boole gave "and" and "or" the same meaning, denoted by the symbol "+". [1]: https://t.co/nBYXLPidoS?amp=1 https://t.co/nBYXLPidoS?amp=1