This page reports on the assembly of this
sculpture, which I call Gyrangle
are described separately here
. Above, you
can see me sitting in front of it at its permanent home at Towson
University, but most of the assembly was done in Washington D.C.
Thank you to everyone who helped, especially Michael Breen and Annette
Emerson of the AMS for the overall management and to Margaret, Marty,
Reza, Alberto, and Iru for many hours of volunteer work.
Over three days, hundreds of people each contributed to the overall
We started with small units, pairs of
bent triangles joined with a connector.
These were simple enough that anyone who
could use a screwdriver could assemble them.
Some participants were young enough that
we spent a lot of time explaining how to use a screw driver.
So the assembly went slower than I
originally anticipated, but still we all had lots of fun.
The weather was beautiful and thousands
of people attended the festival, so we were quickly swamped with
visitors. You can see me here trying to coordinate many different
activities at once.
Along the way, we explained how math
is used not just in science, engineering, economics, etc., but also in
design and art.
The two-triangle units are assembled into various eight-triangle
There are different color combinations and geometric variations to keep
Soon we had built lots of the modules, each labeled to mark its
position in the final structure.
The modules are then joined together into larger chunks of the
We keep adding modules, being careful to ensure that parallel faces are
the same color.
At the end of the second day of the festival, it was only two thirds
We brought everything to Towson University and with the help of
students and faculty finished it on the following day.
The 490 triangles each have twelve screws, so there are 5880 nuts and
I'm very happy with the result. Go to Towson's math department
it in person.
For pictures of the completed Gyrangle
sculpture, see this page
For mathematical background about the design, see this page
Read a nice article
by Reza Sarhangi on the AMS web site.
And be sure to see the assembly video
And thank you Jim Paulson for making the excellent base.
You can look at a set of official event photos here