Examlex
How many principal colors are there in the spectrum?
Universal Generalization
A logical inference rule stating that if something is true for all cases, then it is true in general.
Quantifier Negation
The logical operation of negating or reversing the scope of a quantifier in a statement, changing its encompassing range over the subjects it addresses.
Existential Generalization
A form of inference where from a specific case one concludes the existence of an instance satisfying a particular condition.
Existential Instantiation
A logical principle stating that if something is said to exist, then a specific instance of that thing must also exist.
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