Propositional logic includes sentence letters (A, B, C, etc), which are assigned truth values, and logical connectives (AND, OR, NOT, IMPLICATION, EQUIVALENCE), but not quantifiers. This is also ...
Historically, it was initially a formalization of mathematical language and reasoning, proposed by G. Frege between the end of the 19th and the beginning of the 20th century, and "popularized" by B.
Two important qualifiers to learn: Universal and Existential. Universal in the context of predicates has symbol ∀ and means for all y that the Predicate P(y) evaluates to true. Existential has a ...
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