1 Table of Contents: “...1: Some Representations of the Real Projective Plane before 1900 -- 1.1 Closed Surfaces -- 1.2...”

2 Table of Contents: “... X(2,n) -- 3 The Story of the Configuration Space X(3,6) of Six Lines on the Projective Plane -- VII...”

3 “..., HIRZEBRUCH) where linear ar­ rangements on the complex projective plane ]p2 play the main role...”