Proof Theory and Philosophy
by Greg Restall
Publisher: consequently.org 2006
Number of pages: 168
This is a usable textbook in philosophical logic, accessible to someone who's done only an intro course in logic, covering some model theory and proof theory of propositional logic, and predicate logic. User-friendly, pedagogically useful and philosophically motivated presentation.
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by George Hayward Joyce - Longmans
This work is an attempt at a presentment of what is frequently termed the Traditional Logic, and is intended for those who are making acquaintance with philosophical questions for the first time. Logic is the theory of the mind's rational processes.
by Antony Eagle - University of Adelaide
This textbook covers the basics of formal logic and elementary metatheory. Its distinguishing feature is that it has more emphasis on metatheory than comparable introductory textbooks. It was originally written for an introductory logic course.
by William Walker Atkinson - The Progress company
By the employment of the reasoning faculties of the mind we compare objects presented to the mind as percepts or concepts, taking up the raw materials of thought and weaving them into complex mental fabrics which we call abstract ideas of truth.
by Carveth Read - Project Gutenberg
Logic is the science that explains what conditions must be fulfilled in order that a proposition may be proved. When propositions are expressed with the universality and definiteness that belong to scientific statements, they are called laws.