Logical symbols - PowerPoint PPT Presentation

First order theories

First order theories. (Chapter 1, Sections 1.4 – 1.5) Source: http://www.decision-procedures.org. First order logic. A first order theory consists of Variables Logical symbols: Æ Ç : 8 9 `(’ `)’ Non-logical Symbols  : Constants, predicate and function symbols Syntax. Examples.

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Chapter 1

Chapter 1. The Logic of Compound Statements. Section 1.1. Logical Form and Logical Equivalence. Statements. A statement is a sentence that is either true or false, but not both. Statements: It is raining . I am carrying an umbrella. Not statements He has a driver’s license.

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First Order Logic

First Order Logic. Chapter 7. PL is a Weak Representational Language. Propositional Logic (PL) is not a very expressive language because: Hard to identify objects : mary, 3 Can't directly talk about properties of individuals or relations between individuals:

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