1.Previous
3.Next

of the text is the theorems scattered throughout. Using Aristotle's terminology, these may be generally separated into two categories: "first principles" and "second principles". The first group includes statements labeled as a "definition" ( or ????u??), "postulate" ????u?, or a "common notion" ????? ??????. The postulates (that is, axioms) and common notions occur only in book I. Close study of Proclus suggests that older versions of the Elements may have followed

1.Previous
3.Next