contrapositive
柯林斯詞典
1. ADJ placed opposite or against 對照的
2. N a conditional statement derived from another by negating and interchanging antecedent and consequent 對換句
3. N a categorial proposition obtained from another, esp validly, by any of a number of operations including negation, transferring the terms, changing their quality, and also possibly weakening from universal to particular 對換命題
返回 contrapositive