Logic with a Probability Semantics: Including Solutions to Some Philosophical Problems Theodore Hailperin

ISBN: 9781611460100

Published: November 29th 2010

Hardcover

123 pages


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Logic with a Probability Semantics: Including Solutions to Some Philosophical Problems  by  Theodore Hailperin

Logic with a Probability Semantics: Including Solutions to Some Philosophical Problems by Theodore Hailperin
November 29th 2010 | Hardcover | PDF, EPUB, FB2, DjVu, talking book, mp3, RTF | 123 pages | ISBN: 9781611460100 | 5.56 Mb

The present study is an extension of the topic introduced in Dr. Hailperins Sentential Probability Logic, where the usual true-false semantics for logic is replaced with one based more on probability, and where values ranging from 0 to 1 are subjectMoreThe present study is an extension of the topic introduced in Dr. Hailperins Sentential Probability Logic, where the usual true-false semantics for logic is replaced with one based more on probability, and where values ranging from 0 to 1 are subject to probability axioms. Moreover, as the word sentential in the title of that work indicates, the language there under consideration was limited to sentences constructed from atomic (not inner logical components) sentences, by use of sentential connectives (no, and, or, etc.) but not including quantifiers (for all, there is).

An initial introduction presents an overview of the book. In chapter one, Halperin presents a summary of results from his earlier book, some of which extends into this work. It also contains a novel treatment of the problem of combining evidence: how does one combine two items of interest for a conclusion-each of which separately impart a probability for the conclusion-so as to have a probability for the conclusion based on taking both of the two items of interest as evidence?

Chapter two enlarges the Probability Logic from the first chapter in two respects: the language now includes quantifiers (for all, and there is) whose variables range over atomic sentences, not entities as with standard quantifier logic. (Hence its designation: ontological neutral logic.) A set of axioms for this logic is presented. A new sentential notion the suppositional in essence due to Thomas Bayes, is adjoined to this logic that later becomes the basis for creating a conditional probability logic.

Chapter three opens with a set of four postulates for probability on ontologically neutral quantifier language. Many properties are derived and a fundamental theorem is proved, namely, for any probability model (assignment of probability values to all atomic sentences of the language) there will be a unique extension of the probability values to all closed sentences of the language.



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