Katherine Seaton

A poster for the public lecture. The background is a man (Tadashi Tokieda) flying a white kite over a sunny beach

'A world from a sheet of paper' - SMRI's #InternationalDayOfMathematics public lecture by Tadashi Tokieda will be on Fri 13 March

Starting from a sheet of paper, explore magic tricks and geometry in this lecture filled with table-top demonstrations

🔗 events.humanitix.com/internationa...

#MathSky🧮

I think I have a proof of something for a paper I have been writing. However, this is the third time that I’ve thought this, so I’m more hopeful than triumphant.

There's a whole academic integrity community that I was part of on the old platform (delete X here). Unfortunately, it has not migrated here. The short answer is that absolutely universities should (and many do) have policies about this.

During a faculty debate this morning on the topic of using AI to help grade assignments, I pointed out that students should have the right to opt out of having their work uploaded to an LLM (or any external system, like Turnitin). Does anyone know of any cases or laws or policies that support this?

Interleaved Friezes: Celtic Knotwork and Hitomezashi Both Celtic knotwork and strips of hitomezashi stitching can be interpreted as being two-sided friezes wherein the patterns on the sides are interleaved. We prove which of the thirty-one two-sided fri...

arxiv.org/abs/2602.00178 I've been quiet lately, because I have been writing.

Day 6 of the math-art class I’m leading. The main activities: lunch and share outs with the math and music class, and setting up an art gallery and pairs of our kids each showing their art pieces and doing an art project with 3 kindergartners. Each pair created their own lesson plan! #mathart #mtbos

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.

My go-to recently on these 40 degree days is salade nicoise, because even the selective eater will eat some parts of it (e.g. the white part of the egg(!)). And I do the potatoes and beans in the microwave to generate the least amount of extra heat. But it's not a last minute meal.

...and it is submitted.

Can't quite tell - are those embroidery frames in the top right of the hitomezashi photo? Did you stitch some?

Lovely morning picking raspberries at Kinglake Raspberry Farm with Ms 19. It's a bit of a summer tradition for us now. Much later than most years. (Always get a smile from other people's kids who spot a wombat hole, of which there are many, and think that they might spot a wombat.)

What a great chart to get students to analyse.

Classroom Notes Published in International Journal of Mathematical Education in Science and Technology (Vol. 57, No. 1, 2026)

From our editor-in-chief: everything you ever wondered about Classroom Notes.

Full article: Classroom Notes www.tandfonline.com/doi/full/10....

Wordle 1,665 X/6*
Just one of those days…
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I'm working on mine...

🚨The call for submissions for this year's @BridgesMathart conference is out: www.bridgesmathart.org/b2026/bridge....

Regular papers: 1 February
Short paper: 1 March
Workshop papers: 1 March
Artworks: 15 March
Math + Fashion Show: 15 April
Short Film Festival: 09 May
Family Day: 15 June

I gave it to my sister for Christmas. (Hoping to borrow it back!)

I posted a photo of one from St Paul’s Anglican Cathedral in Melbourne just before Christmas. (In our low church parish, the Christmas tree is in the foyer and not in the church proper!)

I’m taken by that Moravian star.

We have a LOT of rainbow lorikeets at present - the neighbours have an apple tree which is not netted (I don't think they eat them). It's on the fence line, and the birds do the usual thing of eating part of a piece of fruit and dropping the rest. They are such a lovely burst of colour. But messy.

Knives Out Wake Up Dead Man turned out not to be as inappropriate a choice as I first thought when our Christmas was highly constrained by influenza visiting our home!

One of mine is with her in-laws a few hours away and the other tested positive for influenza A yesterday. It’s going to be a quiet one!

Life sized Nativity setting outdoors surrounded by greenery. It is sunny.

Merry Christmas

No, I have not ever had it on Christmas Day for breakfast, but I think I have made enough so that we can have it for breakfast on Boxing Day this year.

They were probably wondering things like "Why is there a smoke machine in the cathedral?" which was also a reasonable thing to wonder.

During the carols, I noticed that it is not a true Kleetope - it seems that on this Moravian star, the pyramids on the triangular faces - or at least the ones that I could see - have not been included. (I do not think that this is what other people were noticing.)

Geometric three-dimensional star hanging in a cathedral

It’s the kleetope of a rhombicuboctohedron.

Animal shapes formed from fairy lights in front of a house. Three reminders and one giraffe.

I present the less-well-known character of Christmas. The Christmas giraffe:

an ad for shapes flame grilled bbq Alt: Image of barbecue shapes for non-Aussies

Caught a train in a carriage with around 20 Grade 6 children on an excursion. One teacher had only his hat, a water bottle and a regular sized box of barbecue shapes. Was it his lunch? It didn’t seem enough for a whole class.

And the art gallery returns to being a classroom…