III.1. Contingent statement for a subject at a certain moment
There is, in predicate logic, a rule named " universal instantiation ". When "for all x F(x)", where F is a sentence with exactly one variable non-quantified, is true in a certain set, then for every element a of this set, we may infer "F(a)".
III.1. Contingent statement for a subject at a certain momentThere is, in predicate logic, a rule named " universal instantiation ". When "for all x F(x)", where F is a sentence with exactly one variable non-quantified, is true in a certain set, then for every element a of this set, we may infer "F(a)".
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