Book:Euclid/The Elements/Book V/Historical Note

Historical Note on : Book $\text{V}$
Book $\text{V}$ of was supposedly done by.

It is an attempt to give a rigorous treatment of the concept of certain irrational quantities such as the geometric mean of two integers.

It has been suggested that this work was one of the main precursors and influences behind the development of the mathematical discipline of set theory.