学习必备欢迎下载离散数学及其应用重要名词中英对应以及重要概念解释与举例1 The Foundations: Logic and Proofs (逻辑与证明)1
1 Propositional Logic(命题逻辑)Propositions(命题)—— declarative sentence that is either true or false, but not both
判断性语句,正确性唯一
Truth Table (真值表)Conjunction (合取, “与”,and),Disjunction (析取, or,“相容或 ”),Exclusive(异或),Negation(非, not), Biconditional (双条件,双向,if and only if )Translating English Sentences 1
2 Propositional Equivalences(命题等价)Tautology (永真式、重言式),Contradiction (永假式、矛盾式),Contingency (偶然式)Logical Equivalences(逻辑等价) —— Compound propositions that have the same truth values in all possible cases are called logical equivalent
(真值表相同的式子,pq 是重言式)Logical Equivalences —— Page24 Disjunctive normal form(DNF,析取范式 ) Conjunctive normal form(CNF ,合取范式 ) 见 Page27~29 1
3 Predicates and Quantifiers (谓词和量词)Predicates—— 谓词,说明关系、特