THE ELECTRONIC JOURNAL OF COMBINATORICS (ed. June 2005), DS #5.

Venn Diagram Survey
Minimum Vertex Symmetric 7-Venn Diagrams

[polar | non-polar ]


Polar Symmetric

Shown below is a minimum vertex polar symmetric Venn diagram for n = 7; it was discovered by Stirling Chow and Frank Ruskey [CR98]. The first diagram has a single curve highlighted.
The same diagram, with all curves colored:


Non-polar Symmetric

This diagram is a minimum vertex non-polar symmetric diagram for n=7. With a single curve coloured:
All curves colored:


THE ELECTRONIC JOURNAL OF COMBINATORICS (ed. June 2005), DS #5.