Monthly Archives: November 2019

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 https://photos.google.com/share/AF1QipNmJSKkQAAwLaSHDm7RO8rgk5AQgbAJPaQRdivEvk3AHlNFP_lEdY1abhhDQ7UobQ?key=cmxtcFRnQk44d1VOa195WUlnaC1aT1cxbXRLVlJ3

Cliff Stein shows off the Klein Bottle Warehouse and Robot. Photo from https://photos.google.com/share/AF1QipNmJSKkQAAwLaSHDm7RO8rgk5AQgbAJPaQRdivEvk3AHlNFP_lEdY1abhhDQ7UobQ?key=cmxtcFRnQk44d1VOa195WUlnaC1aT1cxbXRLVlJ3

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: https://observablehq.com/@jrus/non-robust-arithmetic-gallery 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.
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Nan Ma presented his new website about regular star polytopes: http://nan.ma/star 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.
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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: https://photos.google.com/share/AF1QipNmJSKkQAAwLaSHDm7RO8rgk5AQgbAJPaQRdivEvk3AHlNFP_lEdY1abhhDQ7UobQ?key=cmxtcFRnQk44d1VOa195WUlnaC1aT1cxbXRLVlJ3