Knitting Circle at Joint Mathematics Meeting – JMM Baltimore 2019

This year the Joint Mathematics Meeting was held in Baltimore Maryland. There has been a lot of discussion into the mathematics involved in the patterns of knitting, crocheting and other needle crafts. One of the featured events at the conference was a Knitting Circle, where people could work on, and share, their fiber arts projects. Much of the work being produced had a mathematical component. Here are a few photos from the gathering.

Rebekah DuPont , Ted Ashton, Carolyn Yachel

Corrine Yap

Wendy Smith

Kim Plafker, Jeff Suzuki

Much more from JMM next week.

Susan Happersett

More Art From JMM: Elizabeth Whiteley and Clayton Shonkwiler

The gallery area at JMM was full of interesting work. Here are two more excellent examples.

Elizabeth Whiteley work is often related to botanical drawing and painting. In this new work she explores the geometry of of plants, but also the symmetries of design. Through her study of Frieze Group Symmetries she is developing a series of drawings that tackles the challenges that occur at the corners of the page. A Frieze Group is the mathematical classification for 2-D patterns that repeat in only one direction. Often seen on building as border decoration. There are seven symmetry groups that relate to Frieze patterns involving combinations of rotations reflections and translations.


The silverpoint drawing “Halesia carolina I” (above) features a central figure of three blooms surrounded by a border pattern of single blooms. This frieze pattern features reflected translations with a line of reflection at the center of each side. Whiteley’s drawings call to mind the decorative use of borders in illuminated manuscripts. By referencing the patterns of the central figure in the design element of the border, the symmetries become more connected to the central theme.

The clean lines of Clayton Shonkwiler’s digital animation “Rotation”drew my attention. Using circles and lines, the video presents undulating, almost sensual, geometric images.


I am providing a still shot I took in the gallery, but his videos are available on Shonkwiler’s website.

Although the geometric figures, circles packed into the square grid of the video frame, are basic, the mathematics for this visual feat is quite complex (Shonkwiler utilizes a Möbius transformation of the hyperbolic plane to the Poincaré disk model). I think it is the purity of the clean lines of the circles that allow the grace of the more complicated mathematical processes to translate into a really beautiful video.

Susan Happersett

Exhibition of Mathematical Art at JMM

This year the huge Joint Mathematics Meeting was held in Atlanta Georgia with over 6,000 attendees. A section of the exhibition hall was turned into a gallery space to present art work with mathematical connections. There were also dozens of talks presented by both mathematicians and artists on the topic of Mathematical Art.

During one of these talks, Sarah Stengle presented work from her collaboration with Genevieve Gaiser Tremblay. The large series of works on paper, titled “Criterion of Yielding”, uses stereoscopic images from the 1850’s as the background for drawings of diagrams from the book “Mathematics of Plasticity” written by Rodney Hill in 1950.

The work “Criterion of Yielding, Winter Scene” features a mathematical schematic based on the deformation of metals that creates a visual bridge between the solitary figure on each side of the stereoscopic card. To enhance the feeling of antiquity, the artist uses ground peridot gemstone to make the pigment. This process gives the color a sense of stains instead of paint alluding to the paper as artifact.


The topic of plasticity revolves around the measurement of stress, strain, bending, and yielding. All these ideas are poetically associated to the human condition, both as individuals and with regards to our interactions. The layering of mathematical material over existing images presents an unexpected dichotomy. The additional process of pigmented staining and mark making instills each work with a sense of time.

Andrew James Smith developed a unique process of drawing regular polygons to create a spiral called a Protogon. The process to form a Protogon begins with a triangle and progresses with each new polygon sharing a side with the previous polygon and having one more side.


“Proto Pinwheel” is a digital study for a large acrylic painting and is a pigment transfer on wood. For this work Smith has started with a yellow opaque Protogon shape and then rotated 120 degrees and layered subsequent Protogon shapes in varying transparent colors. The result is a spiral pulsing with energy.

More from JMM in a few days.

Susan Happersett