'Modus tollens' presentation slideshows

982 views • 61 slides

974 views • 61 slides

6.6 Argument Forms

6.6 Argument Forms. A sound deductive argument is valid and has true premises. A deductive argument is one in which it is claimed that the conclusion necessarily follows from the premises. That is, it is claimed that it is valid. .

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Discrete Structures Rules of inference

Discrete Structures Rules of inference. Dr. Muhammad Humayoun Assistant Professor COMSATS Institute of Computer Science, Lahore. mhumayoun@ciitlahore.edu.pk https://sites.google.com/a/ciitlahore.edu.pk/dstruct/. Rules of Inference Valid Arguments in Propositional Logic.

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Fundamentals of Logic

Chapter 2. Fundamentals of Logic. 1. What is a valid argument or proof? 2. Study system of logic 3. In proving theorems or solving problems, creativity and insight are needed, which cannot be taught. Chapter 2. Fundamentals of Logic. 2.1 Basic connectives and truth tables.

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PART 8 Approximate Reasoning

FUZZY SETS AND FUZZY LOGIC Theory and Applications. PART 8 Approximate Reasoning. 1. Fuzzy expert systems 2. Fuzzy implications 3. Selecting fuzzy implications 4. Multiconditional reasoning 5. Fuzzy relation equations 6. Interval-valued reasoning. Fuzzy expert systems. 2.

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Chapter Four

Chapter Four. Proofs. 1. Argument Forms. An argument form is a group of sentence forms such that all of its substitution instances are arguments. Argument Forms, continued. If an argument form has no substitution instances that are invalid, it is said to be a valid argument form .

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CSNB234 ARTIFICIAL INTELLIGENCE

CSNB234 ARTIFICIAL INTELLIGENCE. Chapter 2 Logic. Instructor: Alicia Tang Y. C. LOGIC. A formalization of some aspect of language. a language formalization = syntax, semantic and deduction. A representation of knowledge. A structure at the symbol level. First Order Predicate Logic

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Cognitive Processes PSY 334

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Rules of Inferences

Rules of Inferences. Section 1.5. Definitions. Argument: is a sequence of propositions ( premises ) that end with a proposition called conclusion . Valid Argument: The conclusion must follow from the truth of the previous premises, i.e., all premises ? conclusion

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The Problem of Induction

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Valid and Invalid Arguments

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Valid and Invalid Arguments

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Prove that this argument is valid using valid argument forms (syllogisms)

Prove that this argument is valid using valid argument forms (syllogisms). Disjunctive Syllogism. no. Is there a ~ p ? . Is there a ~ ~ r ? . no. Move on to the next premise. Modus Ponens. Modus Tollens. Is there a p ? q ? . Is there a ~ s ? . yes . no.

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Logic: The Language of Philosophy

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Chapter 6: Strategies and Derived Rules

Chapter 6: Strategies and Derived Rules. 80-210: Logic & Proofs July 14, 2009 Karin Howe. Using Strategies Strategically. HAMMER!! first (&ER, &EL, ?E)

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Math 170 Project #11

Math 170 Project #11. Part 1 Jeffrey Martinez Bianca Orozco Omar Monroy. Chapter 2 Section 3 Problem 30. Identify the rules of inference that guarantees its validity. If this computer program is correct, then it produces the correct output when run with the test data my teacher gave me

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The Null Hypothesis

The Null Hypothesis. Modus Tollens* : The Logic of the Null Hypothesis

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Philosophical Method

Philosophical Method. Logic: A Calculus For Good Reason Clarification, Not Obfuscation Distinctions and Disambiguation Examples and Counterexamples Revealing Our Deepest Convictions Testing Our Principles and Definitions. Logic: Primary Philosophical Tool.

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Modus Toll ens (Denying the consequent)

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