What is the negation of the negation theory?

The negation of the negation theory, also known as the double negation principle, states that if a statement is negated twice, it returns to its original truth value. This means that if a statement is initially true, its negation is false and the negation of that negation returns it to its original truth value of true. Similarly, if a statement is initially false, its negation is true and the negation of that negation returns it to its original truth value of false. This principle is a fundamental concept in logic and has many applications in mathematics and computer science.

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