Logic Diagrams for up to n Classes
Lynette J. Bowles · The Mathematical Gazette · 1971
The article by Margaret E. Baron on the historical development of logic diagrams (The Mathematical Gazette , LIII, May 1969) aroused my interest in the infeasibility of drawing a diagram extendable to n classes. The difficulty of following Venn’s suggestion of a comb-like structure is shown in the complexity of drawing such a diagram for five classes.