Two-Twist Spun Trefoil Knot
Topologists do the strangest things to their knots. For instance they take a trefoil knot, the one with three crossings, spin it at the same time as twisting it around its axis. The knot sweeps out a surface that is convoluted and difficult to understand and odd looking like a bumpy ball. But slice the ball like a loaf of bread and inside are the beautiful contours you see in the image. The names under the image are those of the mathematicians who have worked on the two-twist spun trefoil over the years.
Pencil on heavy paper, 70x30 cm NFS
This image is my 2020 submission to the exhibitions of Mathematical Art Galleries hosted by the annual Bridges Conference. http://bridgesmathart.org