'Argument form' presentation slideshows

Lawyers, Logic, and Logical Fallacies

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The Foundations: Logic and Proofs

The Foundations: Logic and Proofs. Chapter 1, Part III: Proofs. With Question/Answer Animations. Summary. Valid Arguments and Rules of Inference Proof Methods Proof Strategies. Rules of Inference. Section 1.6. Section Summary. Valid Arguments Inference Rules for Propositional Logic

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Quantitative Methods for Researchers

Quantitative Methods for Researchers. Paul Cairns paul.cairns@york.ac.uk. Objectives. Statistical argument Comparison of distributions A fly-by of approaches. How are the abstracts?. Questions? Problems? Restarts?. Statistical Argument. Inference is an argument form

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Quantitative Methods for Researchers

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(CSC 102)

(CSC 102). Discrete Structures. Lecture 8. Previous Lectures Summary. Predicates Set Notation Universal and Existential Statement Translating between formal and informal language Universal conditional Statements Equivalence Form Implicit Qualification Negations.

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Valid and Invalid Arguments

Valid and Invalid Arguments. Lecture 3 Section 1.3 Fri, Jan 14, 2005. Arguments. An argument is a sequence of statements. The last statement is the conclusion . All the other statements are the premises . A mathematical proof is an argument. Argument Forms.

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Intro to Predicates and Quantified Statements

Intro to Predicates and Quantified Statements. Predicate: A sentence that contains a finite number of variables and becomes a statement when values are substituted for the variables. Domain: the set of all values that can be substituted for the variables

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MLS 570 Critical Thinking Reading Notes for Fogelin:

MLS 570 Critical Thinking Reading Notes for Fogelin:. Propositional Logic Fall Term 2006 North Central College. Propositional Logic. Propositional Logic is aimed at understanding the concept of validity. Easy to see that one claim follows from another.

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Logic 3 Tautological Implications and Tautological Equivalences

Logic 3 Tautological Implications and Tautological Equivalences. Tautologies Remember, Tautologies are always true. Thus, if we can use different propositions and logical equivalences to show two statements are tautologies, we can do proofs.

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Introduction to Logic

Introduction to Logic. Logical Form: general rules All logical comparisons must be done with complete statements A statement is an expression that is true or false but not both If p or q then r If I arrive early or I work hard then I will be promoted Tautologies and Contradictions

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Introduction to Logic

Introduction to Logic. Logical Form: general rules All logical comparisons must be done with complete statements A statement is an expression that is true or false but not both If p or q then r If I arrive early or I work hard then I will be promoted Tautologies and Contradictions

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Chapter 1

Chapter 1. The Logic of Compound Statements. Section 1.3. Valid & Invalid Arguments. Review. Review of last lecture Conditional Statement if-then, -> p -> q ? ~ p v q Negation of Conditional ~( p -> q ) ? p ^ ~ q Contrapositive of Conditional p -> q ? ~ q -> ~ p. Review

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Deductive Validity

Deductive Validity. In this tutorial you will learn how to determine whether deductive arguments are valid or invalid. Chapter 3.b. Perhaps the most important concept in logic is the concept of deductive validity. Deductive arguments are either valid or invalid.

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Deductive Validity

Deductive Validity. In this tutorial you will learn how to determine whether deductive arguments are valid or invalid. . Go to next slide. Perhaps the most important concept in logic is the concept of deductive validity. . Deductive arguments are either valid or invalid. .

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Complex Numbers

Complex Numbers. Modulus-Argument Form. Im. y. Re. x. Modulus-Argument Form. The complex number z is marked on the Argand diagram. Here is the real and imaginary part of the complex number. Cartesian coordinates are not the only way to specify a position on a plane.

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Can Big Questions Be Begged?

Can Big Questions Be Begged?. Fallacies are mistakes in inference, BUT. Hintikka and Walton disagree with Robinson about the irrelevance of elenchus, taking it to be a good model not only of argumentation but also of scientific enquiry. Begging the question is not a mistake in inference.

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MATERI I I

MATERI I I. PROPOSISI. Tautology and Contradiction. Definition A tautology is a statement form that is always true. A statement whose form is a tautology is a tautological statement. A contradiction is a statement form that is always false.

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