It is designed to stand by itself as an interpretation of the original, but it will also be useful as an aid to reading the Greek text. "Whatever we now understand of Ptolemy ... is in this book."--Noel Swerdlow, University of Chicago

... the Alma- gest the three terms are , of course , represented by their numerical values , and com- bined according to a detailed set of rules [ XIII , 6 ; Hei 2 , 588 ] for deciding whether the resulting latitude is southern or northern ...

As the work progresses, many of Ptolemy's Books are introduced with their own Preliminaries, supplying readers with the information necessary to understand and work with the matters specific to those sections.

... the Almagest from our statistical analysis . 4. Modern starry sky 1. If we want to date an ancient or medieval star catalog from the coor- dinates of stars it contains , we must be able to compute positions of stars at various moments ...

This book has been considered by academicians and scholars of great significance and value to literature.