Final answer:
The concept in question is Presupposition Theory, which maintains that the presuppositions of a sentence remain constant regardless of negation.
Step-by-step explanation:
The concept described in the question relates to Presupposition Theory, which states that when a sentence is negated, the presuppositions within that sentence should remain the same. The presupposition is an implicit assumption within the sentence that remains unchanged regardless of the sentence's truth value. For example, the statement 'The king of France is bald' presupposes that there is a king of France. When negated to 'The king of France is not bald', the presupposition that there exists a king of France remains. This concept is distinct from the Noncontradiction principle, which asserts that contradictory statements cannot both be true at the same time, and Redundancy Theory of Truth, which suggests that asserting something is true adds no new information to the proposition itself.