Modal Logic: An Introduction

Modal Logic: An Introduction by Chellas, Brian F.. paperback edition. ISBN: 9780521295154.

A textbook on modal logic, intended for readers already acquainted with the elements of formal logic, containing nearly 500 exercises. Brian F. Chellas provides a systematic introduction to the principal ideas and results in contemporary treatments of modality, including theorems on completeness and decidability. Illustrative chapters focus on deontic logic and conditionality. Modality is a rapidly expanding branch of logic, and familiarity with the subject is now regarded as a necessary part of every philosophers technical equipment. Chellas here offers an up-to-date and reliable guide essential for the student.