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Lecture 3
Lecture 3

Chapter 7 Propositional and Predicate Logic
Chapter 7 Propositional and Predicate Logic

... Not logically valid, BUT can still be useful. In fact, it models the way humans reason all the time: „ Every non-flying bird I’ve seen before has been a penguin; hence that non-flying bird must be a penguin. ...
characterization of prime numbers by
characterization of prime numbers by

PROVING UNPROVABILITY IN SOME NORMAL MODAL LOGIC
PROVING UNPROVABILITY IN SOME NORMAL MODAL LOGIC

... Now, let T = < W, R > be an arbitrarily fixed tree with a set of nodes W = {x1 , . . . , xn }. We attach to these nodes different propositional variables q(x1 ), . . . , q(xn ) or for V short q1 , . . . , qn . This set will be referred as var(T ). Denote χ(xi ) = qi ∧ {¬qj : qj ∈ var(T ), j 6= i}. N ...
Lecture 16 Notes
Lecture 16 Notes

... complete with respect to “exploding” Kripke models. His proof is constructive. As yet it is not clear how to use his models in a computational way, unlike the situation for uniform evidence semantics. ...
HISTORY OF LOGIC
HISTORY OF LOGIC

... – Considered to be the father of Analytic Philosophy. – His Objective was demonstrating that arithmetic is identical with logic. – He invented axiomatic predicate logic and quantified variables, which solved the problem of multiple generality. ...
Lambda Calculus and Functional Programming
Lambda Calculus and Functional Programming

... single function definition scheme. It was introduced in the 1930s by Alonzo Church as a way of formalizing the concept of effective computability. The λ-calculus is universal in the sense that any computable function can be expressed and evaluated using this formalism. It is thus equivalent to Turin ...
15. Functional Programming
15. Functional Programming

... suitability of the language for software development ...
The Lambda Calculus: a minimal ML?
The Lambda Calculus: a minimal ML?

... Curry and his colleagues (see Curry et al. (1958,1972)). Roughly, the goal of combinator logic was to develop rules of logic that were variable-free. Expression of functions in combinatory logic used an alphabet of a fixed set of combinators, essentially functional terms that operated on other terms ...
Artificial Intelligence
Artificial Intelligence

... • To express the idea that everyone likes cheese, we might say: (∀x)(P(x)→L(x, C)) • The symbol ∀ is read “for all,” so the statement above could be read as “for every x it is true that if property P holds for x, then the relationship L holds between x and C,” or in plainer English: “every x that is ...
PDF
PDF

... theorem, and the only if part is the completeness theorem. We will prove the two parts separately here. We begin with the easier one: Theorem 1. Propositional logic is sound with respect to truth-value semantics. Proof. Basically, we need to show that every axiom is a tautology, and that the inferen ...
HW-04 due 02/10
HW-04 due 02/10

... (,), represent in predicate logic the following sentences, write the negation of the predicate expression and translate back to English a. Some classes are difficult and boring. b. Difficult classes are not boring. c. No classes are difficult and boring ...
Negative translation - Homepages of UvA/FNWI staff
Negative translation - Homepages of UvA/FNWI staff

Functional PLs
Functional PLs

... Functional languages try to model mathematical functions as much as possible. ...
Lecture10 - CIS @ UPenn
Lecture10 - CIS @ UPenn

... • Can I pass a function as an argument to another function • YES! • The first time you see this, it looks crazy • Just start thinking of a function as a machine that turns ...
Functional Programming Languages
Functional Programming Languages

... The values of the parameters are substituted into the function body The function body is evaluated The value of the last expression in the body is the value of the function ...
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fund

... Formal system with three parts • Notation for function expressions • Proof system for equations • Calculation rules called reduction ...
Lecture10
Lecture10

... The 3 argument version of the reduce function • We have already seem reduce(function, list) • There is a 3 argument variant which is • Reduce(function, list, identity element/first element for the process ...
CS 170 * Intro to Programming for Scientists and Engineers
CS 170 * Intro to Programming for Scientists and Engineers

... These symbols are not variables – they are like the names bound by Java’s final declarations ...
Functional Programming
Functional Programming

... What is a Functional Language? Opinions differ, and it is difficult to give a precise definition, but generally speaking: Functional programming is style of programming in which the basic method of computation is the application of functions to arguments; ...
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doc

... I believe that mainly this metric can be used to infer how concise the design is. In theory a succinct design should have better clarity, as there is less code to understand. However, although functional code can fit into much fewer lines, it is still possible to write bad code that is just as hard ...
Fundamentals
Fundamentals

... Functional programming: Example 1 Devise a representation for stacks and implementations for functions push (elt, stk) returns stack with elt on top of stk ...
Logical Fallacies Chart APLAC TERM DEFINITION EXAMPLE 1
Logical Fallacies Chart APLAC TERM DEFINITION EXAMPLE 1

... This fallacy's most popular appearance is in the form of a challenging question, because questions with contradictory premises are such brain teasers. Someone tries to win support for their argument or idea by exploiting her or his opponent's feelings of pity or guilt. In false analogies, though A a ...
Homework 5
Homework 5

Functional Programming
Functional Programming

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Combinatory logic

Combinatory logic is a notation to eliminate the need for quantified variables in mathematical logic. It was introduced by Moses Schönfinkel and Haskell Curry, and has more recently been used in computer science as a theoretical model of computation and also as a basis for the design of functional programming languages. It is based on combinators. A combinator is a higher-order function that uses only function application and earlier defined combinators to define a result from its arguments.
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