What is the law of transposition?

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What is the law of transposition?

The law of transposition, also known as the law of contraposition, is a fundamental principle in formal logic. It states that if a conditional statement is true, then its contrapositive is also true. In other words, if we have a statement of the form "If A, then B," the law of transposition allows us to conclude "If not B, then not A." This law is based on the logical equivalence between a conditional statement and its contrapositive.