Simson on Porisms

An Annotated Translation of Robert Simson’s Posthumous Treatise on Porisms and Other Items on this Subject

  • Ian Tweddle

Table of contents

  1. Front Matter
    Pages i-x
  2. Ian Tweddle
    Pages 1-9
  3. Ian Tweddle
    Pages 11-43
  4. Ian Tweddle
    Pages 97-198
  5. Back Matter
    Pages 269-276

About this book


Most mathematicians' knowledge of Euclid's lost work on Porisms comes from a very brief and general description by Pappus of Alexandria. While Fermat and others made earlier attempts to explain the Porisms, it is Robert Simson who is generally recognised as the first person to achieve a genuine insight into the true nature of the subject.
In this book, Ian Tweddle, a recognised authority on 18th century Scottish mathematics, presents for the first time a full and accessible translation of Simson's work. Based on Simson's early paper of 1723, the treatise, and various extracts from Simson's notebooks and correspondence, this book provides a fascinating insight into the work of an often-neglected figure. Supplemented by historical and mathematical notes and comments, this book is a valuable addition to the literature for anyone with an interest in mathematical history or geometry.


History of Mathematics Porisms Robert Simson geometry mathematics proposition

Authors and affiliations

  • Ian Tweddle
    • 1
  1. 1.Department of MathematicsUniversity of StrathclydeGlasgowUK

Bibliographic information