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Introduction to Computational Logic
Introduction to Computational Logic

Interpretability formalized
Interpretability formalized

... For another occurrence of interpretations, we can think of translations of classical propositional calculus into intuitionistic propositional calculus. In this thesis, however, we will only consider interpretations between first order theories. The notion of interpretability that we shall work with ...
Graphical Representation of Canonical Proof: Two case studies
Graphical Representation of Canonical Proof: Two case studies

... forms of proofs in this formalism are free of bureaucracy, and also canonical from a semantic perspective: for a suitable notion of normal form, they correspond one–to–one with morphisms in free Cartesian closed categories (see e.g. [69]). Another example are Girard’s proof nets for multiplicative l ...
A Transition to Advanced Mathematics
A Transition to Advanced Mathematics

... statement is always true, so while the statement may be true for many (even infinitely many) examples, we would never know whether another example might show the statement to be false. By studying examples, we might conclude that the statement “x 2 − 3x + 43 is a prime number” is true for all positi ...
Sums of Squares
Sums of Squares

Version 1.0 of the Math 135 course notes - CEMC
Version 1.0 of the Math 135 course notes - CEMC

Book of Proof - people.vcu.edu
Book of Proof - people.vcu.edu

- ScholarWorks@GVSU
- ScholarWorks@GVSU

a thesis submitted in partial fulfillment of the requirements for the
a thesis submitted in partial fulfillment of the requirements for the

- ScholarWorks@GVSU
- ScholarWorks@GVSU

... an argument that communicates a mathematical truth to another person (who has the appropriate mathematical background). A proof must use correct, logical reasoning and be based on previously established results. These previous results can be axioms, definitions, or previously proven theorems. These ...
Enumerations in computable structure theory
Enumerations in computable structure theory

Book of Proof
Book of Proof

Enumerations in computable structure theory
Enumerations in computable structure theory

Ribbon Proofs - A Proof System for the Logic of Bunched Implications
Ribbon Proofs - A Proof System for the Logic of Bunched Implications

A BOUND FOR DICKSON`S LEMMA 1. Introduction Consider the
A BOUND FOR DICKSON`S LEMMA 1. Introduction Consider the

a PDF file of the textbook - U of L Class Index
a PDF file of the textbook - U of L Class Index

the fundamentals of abstract mathematics
the fundamentals of abstract mathematics

The Z/EVES 2.0 User`s Guide - Department of Computer Science
The Z/EVES 2.0 User`s Guide - Department of Computer Science

Full text
Full text

Flowcharting1
Flowcharting1

Before reading the descriptions of the board work try to figure out
Before reading the descriptions of the board work try to figure out

On Cantor`s First Uncountability Proof, Pick`s Theorem
On Cantor`s First Uncountability Proof, Pick`s Theorem

Logic and Proof - Numeracy Workshop
Logic and Proof - Numeracy Workshop

... Adrian Dudek, Geoff Coates ...
Die Grundlagen der Arithmetik §§82–83
Die Grundlagen der Arithmetik §§82–83

Lecture Notes - Alistair Savage
Lecture Notes - Alistair Savage

1 2 3 4 5 ... 23 >

Turing's proof

Turing's proof is a proof by Alan Turing, first published in January 1937 with the title On Computable Numbers, With an Application to the Entscheidungsproblem. It was the second proof of the assertion (Alonzo Church's proof was first) that some decision problems are ""undecidable"": there is no single algorithm that infallibly gives a correct ""yes"" or ""no"" answer to each instance of the problem. In his own words:""...what I shall prove is quite different from the well-known results of Gödel ... I shall now show that there is no general method which tells whether a given formula U is provable in K [Principia Mathematica]..."" (Undecidable p. 145).Turing preceded this proof with two others. The second and third both rely on the first. All rely on his development of type-writer-like ""computing machines"" that obey a simple set of rules and his subsequent development of a ""universal computing machine"".
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