Venn Diagram Survey
Monotone Symmetric 7Venn Diagrams
without Polar Symmetry
There are 17 of them, which we call M1M17. Clicking on those numbered M12M17 will return
a Tutte embedding of the diagram.

M1.
This one has the zigzag middletwolevels and the rather nice property
that each curve intersects the others exactly 6 times. It was
discovered by Carla Savage and Peter Winkler.
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.

M2.
This one was discovered by Branko Grünbaum (Figure 6 of
[Gr92b]),
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.
 M3,
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.
 M4,
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.
 M5,
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.
 M6,
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.
 M7,
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.
 M8,
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.
 M9,
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.
 M10,
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.
 M11,
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.
 M12,
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.
 M13,
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.
 M14,
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.
 M15,
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.
 M16,
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.
 M17,
Tutte embedding,
Tutte embedding (one curve colored),
link rendering.
The numbers above are simply the order in which our program
found them.
We have seen none of these published before, except for M1 and M2.