deductive
Adj 推论的, 演绎的
Invalid [法] 推定的, 推断的, 演绎的

Roughly speaking , deductive logic is mainly about the consistency of statements and beliefs, as well as the validity of arguments .
粗略地讲，推理逻辑主要研究的是陈述与观点的一致性以及论点的正确性。;