The logic book
Date
2014
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
The McGrow-Hill Companiess
Abstract
Description
This is a text in deductive logic—more specifi cally, in formal or symbolic
deductive logic. Chapters 1–5 are devoted to sentential logic, the branch of
symbolic deductive logic that takes sentences as the fundamental units of
logical analysis. Chapters 7–10 are devoted to predicate logic, the branch of
symbolic deductive logic that takes predicates and individual terms as the
fundamental units of logical analysis. Chapter 6 is devoted to the metatheory
of sentential logic, while Chapter 11 is devoted to the metatheory of
predicate logic.
The hallmark of deductive logic is truth-preservation. Reasoning that is
acceptable by the standards of deductive logic is always truth-preserving; that is,
it never takes one from truths to a falsehood. The following syllogism provides
an example of such reasoning:
Keywords
Syntax and symbolization, Sentential logic, Predicates, singular terms, and quantity expressions of english