
[数] 谓词逻辑
By predicate logic, the solution is set up and the process of analysis is provided.
依据谓词逻辑规则建立解决方案,提供了求解的流程。
Predicate logic of first order is the most classical calculation system in modern logic.
一阶谓词逻辑是现代逻辑中最为经典的演算系统。
Symbolic logic is often divided into two branches, propositional logic and predicate logic.
符号逻辑往往分为两个分支,命题逻辑和谓词逻辑。
Predicate logic: also predicate calculus, which stu***s the internal structure of ****** propositions.
谓词逻辑:也叫谓词演算,它研究简单命题的内部结构。
Any logic which USES the existential quantifier or the universal quantifier is said to be a predicate logic.
任何逻辑使用存在量词或全称量词是说是一个谓词逻辑。
Predicate Logic(谓词逻辑)是数理逻辑的重要分支,用于描述命题内部结构和量化关系。以下是详细解析:
核心概念
谓词逻辑通过谓词(Predicate)、量词(Quantifier)和变量(Variable)表达复杂命题。例如,“所有人都会死”可符号化为:
$$forall x (text{Human}(x) rightarrow text{Mortal}(x))$$
其中,$forall$ 是全称量词,$text{Human}(x)$ 是谓词(表示“x是人”),$rightarrow$ 是逻辑蕴含。
与命题逻辑的区别
命题逻辑仅处理简单命题的真假连接(如“且”“或”),而谓词逻辑能分析命题内部结构,并引入量词(如“所有”“存在”)。
词汇集合
包括三类符号:
项(Term)与公式(Formula)
扩展阅读:若需了解一阶谓词逻辑(First-Order Predicate Calculus)的局限性,可参考;完整语法规则详见。
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