[Wh] H. Whitney, A Theorem on Graphs, Annals of Math.,
32 (1931) 378-390.
Off-site references
The external sites listed below are not endorsed by The Electronic Journal
of Combinatorics and do not form part of this article.
[FAQ]
Frank Ruskey maintains a small
FAQ
(frequently asked questions) containing the answers to some questions
he received about Venn diagrams, but are outside the scope of this
survey.
[COS]
The set partitions
information page, part of the
Combinatorial Object
Server.
[JC]
Jeremy Carroll's
page
about his solution of the 6-Venn triangle problem.
Make sure that you try out his Java applet!
[SJ]
Slavik Jablan's
page "Are Borromean Links so Rare?"
[PH]
Peter Hamburger's paper about his solution to the symmetric 11-Venn
diagram problem, entitled
Doodles and Doilies
[MAC]
The
MacTutor History of Mathematics Archive contains a
short biography of John Venn.
[GC]
The Geometry Center at the University
of Minnesota.
[KP]
Robert Scharein's KnotPlot site. All pictures of knots on this
site were produced with KnotPlot.