Robert (Bob) Bosch

Sounds interesting, but I received a "404 Not Found" message when I clicked the link.

"Spiraling to keep myself from spiraling." An open knight's tour of a 99x99 chess board. The tour can be thought of as a tour of 11x11 tours, and it can be extended indefinitely to form an infinite Hamiltonian path through the infinite knight graph.

Wow!

Gorgeous!

!wow!

Amazing!

Cellular automata: Vines on a Fence

Cellular automata: Vines on a Fence

Cellular automata: Vines on a Fence

Cellular automata: Vines on a Fence

This is cellular automata applied to a staggered grid, like in beaded peyote stitch. All of these images were created with the same algorithm, what I call “Vines on a Fence.” The only difference among them is how I started each patch. I give the recipe for Vines on a Fence on page 105 of my new book

Look, it’s the sun!

Such sad news. So sorry for your loss, Mike.

Memorial University of Newfoundland (MUN) has announced a restructuring of its executive leadership team and the intention to sell multiple properties, as the university tries to address a shortfall of approximately $25 million. The changes are just two of several that are expected in the year ahead, as the university also contends with an upcoming tuition-fee freeze. In late January, MUN announced it will begin selling multiple properties in St. John’s that are “not closely aligned with its academic mission,” as well as its Harlow Campus in the United Kingdom. The announcement came just two weeks after the university announced executive restructuring, which saw it reduce the number of vice-presidents from seven to three.

PSA: it is in fact possible for universities to address financial challenges by slashing (incredibly expensive and largely useless) admin positions.

Memorial University just downsized VPs from 7 to 3.

Yes we can!

universityaffairs.ca/news/memoria...

And the gold medal goes to Pierre Bézier.

#olympics #mathsky #iteachmath #desmos

Photo of a Book “Beading with Algorithms: Cellular Automata in Peyote Stitch” by Gwen Fisher and Roger Antonsen, World Scientific, with a QR code.

Text about the book and information about the two authors.

I started this project twelve years ago, and today I hold the result in my hand. It’s a book that combines bead weaving with math called, “Beading with Algorithms: Cellular Automata in Peyote Stitch.”

This book is the first of its kind, a recipe book of algorithms for making pixel art.

The 99x99 tour visits the 11x11 chessboards in Peano-curve-like fashion.

I constructed this tour by selecting two "motif tours" of an 11x11 chessboard (one of them found by Éduoard Lucas), arranging them (or their rotations or reflections) into a 9x9 array of 11x11 tours, and then stitching together the 81 11x11 tours with 80 "connectors."

A tour of tours, an open knight's tour of an 99x99 chessboard. The tour starts in the bottom left corner and ends near the top right corner.

A single-line drawing that is simultaneously an open knight's tour of a 99x99 chessboard and a 3x3 Latin square.

If you're living somewhere outside the USA, one thing you can do is pressure your leaders to boycott World Cup and Olympic events here.

Here's my first-draft version of this syllabus statement, *heavily* influenced by Spencer (like many things that I do).

An improbability of puffins.

An array of hedgehogs.

Gorgeous!

Two knight's tour (32x32 and 64x64). Two terms of an infinite sequence of tours.

I had a really nice couple of days at Oberlin College hanging out with @baabbbaash.bsky.social, his colleagues, and students! While walking around campus, I saw this unusual window. Assuming it is the unit circle, what's the equation of the ellipse?

It was so great having you visit us. Your talk was absolutely wonderful. Right after it, one student ran up to me in the hallway and said "That talk was kick ass!"

Cover: The Mathematics of Origami

*The Mathematics of Origami*.
Expected online publication date: December 2025. Print publication: 31 December 2025.
www.science.smith.edu/~jorourke/Ma...
#MathSky #Mathematics 🧪 #Geometry #Origami #MathArt

[Edited] On behalf of the Oberlin Mathematics Department, I am thrilled to say that Dave Richeson will be delivering this year's Tamura/Lilly Lecture, "A Romance of Many (and Fractional) Dimensions," on 11.6.25. The reception will be at 3:30pm in King 203. The talk will be at 4:30pm in King 337.

Researchers Discover the Optimal Way To Optimize | Quanta Magazine The leading approach to the simplex method, a widely used technique for balancing complex logistical constraints, can’t get any better.

For nearly 80 years, an algorithm called the simplex method has been one of the most widely used tools for when a logistical decision needs to be made under complex constraints. A new update makes it faster than ever. www.quantamagazine.org/researchers-...

Are you in Ohio? Know someone who is? Step up. Let Senator Jon Husted hear from you!

Gerhard Richter, Seestück, oil on canvas, 1970