contraposition
/ˌkɑntrəpəˈzɪʃən/
noun
- The logical relationship between two statements where one is the opposite of the other, often used in reasoning and proofs.
- The student used contraposition to simplify the complex argument.
- Understanding contraposition helps in solving many math puzzles.
- In logic, contraposition tells us that if 'if A then B' is true, then 'if not B then not A' is also true.