November 16th, 2019 Meeting Notes

The November 16th meeting was hosted by Jason Merrill at the Desmos office. There were four presentations.

Indira Chatterji gave a presentation on her mathematical drawings and animations.

Chamberlain Fong presented on “squircles” and the content of his last Bridges paper.

Scott Vorthmann gave a presentation on vZome.

Toby Schachman gave a presentation on his Sun Seeds project with collaborator Ryan Alexander. If you’re interested in purchasing Sun Seed kits, they will continue taking orders while we’re finishing this batch. Please contact Toby if you are interested. More info on the Indiegogo campaign can be found here:

Toby also spoke about Cuttle, the CAD tool he is developing which we used to design the Sun Seeds. Cuttle combines direct-manipulation vector editing with programming capabilities. More info, and a place to sign up for updates:

September 27th, 2019 Meeting Notes

Cliff Stoll hosted at his home and Klein Bottle warehouse.

Participants were given a tour of the Klein Bottle warehouse and warehouse robot.

Cliff Stein shows off the Klein Bottle Warehouse and Robot. Photo from

Cliff Stein shows off the Klein Bottle Warehouse and Robot. Photo from

He also shared a number of his various mathematical amendments to his home as well as an assortment of mathematical blown glass artwork.

Jacob Rus presented his work on some delightful images that result from accumulations of floating point errors. His “Non-robust arithmetic gallery” can be seen here: This work has since been made into actual fabric with the help and advice of Stacy Speyer, so hopefully we will all get to see at the next meeting.

Nan Ma presented his new website about regular star polytopes: During the walk-through of several webpages with many images and animations, he shared the interesting fact that when you explode cells of the star polytope, the Grand 120-cell to a specific distance, they form the convex 120-cell.

Stacy Speyer brought some examples of her woven balls for show and tell, and Stan Isaacs brought an assortment of puzzles.

Additional images from this meeting can be found here:

August 10th, 2019 Meeting Notes

Scott Vorthmann organized a build of a zometool “bucky-bone” to start off the meeting. The “bucky-bone” is a model of two C80 bucky balls connected by a carbon nanotube. You can read more about this model here:

Following this, several people shared recent projects. Gwen Fisher taught about her process creating mathematical artwork with colored pencils, and allowed us to try them out. Bruce Puckett gave us a tour of his beautiful mathematical art, all coded in Java, I believe. Stacy Speyer shared her hepta-hexaflexagon project, and Stan Isaacs shared the rolling shapes he acquired from MoMath.

Thank you to all who attended, and thank you to the well-wishers who could not!