iiinova — where your digital self keeps evolving

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Dave Richeson @divbyzero.bsky.social · 05/10/2026

I wanted to see how my calculus students could do creating a closed piecewise parametric curve for an impossible object. They made one side and could choose one of my shapes for the other side. Then I printed the objects. It went well, and I think I can ramp it up a little bit and

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Dave Richeson @divbyzero.bsky.social · 14/09/2026

Over the weekend, I had an idea: what if, instead of the objects appearing to sit horizontally in front of you, I modified them to appear vertically? Here are four test attempts.

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Daniel Wilson @helsig.bsky.social · 14/09/2026

#SciArtSeptember #SciArt Day 14. #Crescent Apollonian knot.

A knot pattern based on an Apollonian gasket. Math art created using Excel and Krita.

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Matt Henderson @matthen.com · 09/09/2026

Drawing a picture from the continued fraction of a number. The continued fraction terms drive a Fourier series.

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ꭓle Ormsby 𓆙 @e-infinity.space · 08/09/2026

Now ready for you to enjoy: e-infinity.space/picture-book/ #MathArt #MathSky

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Dave Richeson @divbyzero.bsky.social · 07/09/2026

Whenever I had a few minutes over the last few days, I created a new shape for my "impossible objects" library. Want to make a cactus/cowboy boot shape? You can now. I also implemented a visual picker to replace the drop-down menu. I plan to keep adding to it. divisbyzero.github.io/impossible-o...

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Dave Richeson @divbyzero.bsky.social · 07/09/2026

I just updated this web app I made last summer—it lets you design your own US weather maps for use in Multivariable Calculus classes. Now you can add cities to the map and save map settings for later. I also improved the UI. divisbyzero.github.io/isothermgene...

divisbyzero.github.io

Isotherm Generator

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Matt Henderson @matthen.com · 07/09/2026

A ring built from the Julia sets found along the main cardioid of the Mandelbrot set. one of my favourite mathematical objects

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Ilana Horn @ilanahorn.bsky.social · 06/09/2026

[GIFT] "The 92-Year-Old Mathematician and the Teenage Apprentice" A beautiful story about mathematical intuition, collaboration, and discovery. #iteachmath www.nytimes.com/2026/09/06/s...

nytimes.com

The 92-Year-Old Mathematician and the Teenage Apprentice (Gift Article)

Joan Birman thought her major discoveries were behind her. Then came an email from a young neighbor — a girl who knew little but wanted to learn.

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Dave Richeson @divbyzero.bsky.social · 04/09/2026

I've been thinking about how to best display and view my impossible objects. Here's what I've come up with so far. The feet fit into the spinner to line up the object. The spinner turns 180°. The window forces the viewer to look down at a 45° angle. And the mirror has a slot to hold it at the

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Matt Henderson @matthen.com · 30/08/2026

sequence of the smallest numbers that are not listed in the OEIS: 20990, 23543, 23735, 24085, 24159, 24555, 26301, 26673, 26708, 27266, 27815, 27988, 28330, 28353, 28869, 28946, 29577, 29962, 30131, 30146, 30193, 30328, 30466, 30473…

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Matt Henderson @matthen.com · 31/08/2026

1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1… a_n is the most common integer at position n of all sequences

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Matt Henderson @matthen.com · 30/08/2026

1, 0, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 11, 13, 16, 15, 14, 17, -1, 18, 24, 20, 19, 21, 23, 22, 30, 32, 25, 36, 28, 31, 29, 27, 26, 37, 40, 35, 42, 48, 33, 34, 41, 64, 60, 43, 45, 56, 44, 47… The most common numbers in the Online Encyclopaedia of Integer Sequences, sorted by frequency

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Daniel Wilson @helsig.bsky.social · 31/08/2026

In Krita I was using Gaussian blur and Prewitt edge detection to create some interesting effects. I realized I could google the names and learn about the math. I wanted to do something similar in Excel but started with my own approach. I created an elevation map applied to a rose curve.

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Fractal Kitty @fractalkitty.com · 27/08/2026

I'm going to run a group - Painting the OEIS. Please share your favorite sequences and why. I'll share what art I do with any of them. #oeis #mtbos #mathArt

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samjshah.bsky.social @samjshah.bsky.social · 28/08/2026

It is finally done! My Truchet tiles stained glass piece. I explored Guillaume Pelletier-Auger’s site ages ago and was inspired. pelletierauger.com/en/projects/... #mathart #mtbos I feel really proud even though it’s crooked in places; I’m still such a novice. But it’s so beautiful to me!

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Matt Henderson @matthen.com · 27/08/2026

a parabola is formed when circles radiating from a point meet lines moving at the same speed. this is equivalent to slicing a cone parallel to its slope

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Matt Lane @mattlane.us · 27/08/2026

Hey math stans! looking for an application of the intermediate value theorem? check out my latest, on the absolute dystopia we must be living in to allow prediction markets on medical trials: mattlane.us/stories/bett...

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Dave Richeson @divbyzero.bsky.social · 26/08/2026

Ok. One more. Two circles or three?

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Dave Richeson @divbyzero.bsky.social · 24/08/2026

Here are a few more impossible objects: the duck/rabbit illusion and the hand/foot illusion.

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Christian Lawson-Perfect @christianp.mathstodon.xyz.ap.brid.gy · 20/08/2026

Eddie Woo and the National Gallery of Australia have a new video series "charting the intersection between maths and art". The first one is about a sculpture called "Ouroboros", by Lindy Lee: www.youtube.com/watch?v=eJaRqLmmTQg #MathArt

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Fidel Destro @fideldestro.bsky.social · 21/08/2026

A thing. (okay, some rhombic dodecahedra packed, then turned into only the outer shell, and subdivided.) #Blender #MathArt #AbstractArt #Geometry #SacredGeometry #NotTotallyMundaneGeometry

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Susan Goldstine @sgoldstine.bsky.social · 12/06/2025

#ShowMeYourKnits #mathart 🧵 After I broke into two-color brioche, I had a brainwave that I could do this really cool thing as a knit #cowl. It was two years before I finally made my first try, shown here. Explanation and photos to follow; keep an eye on main and background colors. 🌈 🧶 #knitsky

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samjshah.bsky.social @samjshah.bsky.social · 21/08/2026

Placed a library hold on it just based on this. ❤️

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MathHappens Foundation @mathhappens.bsky.social · 20/08/2026

These four tiles are related via the Pythagorean theorem and they can make Voronoi regions!

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Desmos Studio @desmos.com · 21/08/2026

Aaaaand...action! You can now add buttons to your Desmos notebooks. #mathsky #iteachmath #desmos

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samjshah.bsky.social @samjshah.bsky.social · 19/08/2026

I still have no idea if this will hold together after soldering, but I just spent a few hours finishing up foiling many of the pieces for my Truchet tiles stained glass and taping it all together. #mathart #mtbos

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samjshah.bsky.social @samjshah.bsky.social · 18/08/2026

Happy birthday! I have been thoroughly captivated by your videos and cool math-art insights! They have inspired me … and I’ve even done math-art with students based on your hitomezashi video! 💜

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Ayliean @ayliean.bsky.social · 18/08/2026

It’s my Birthday 🥳 For my selfish gift: I would absolutely love if could leave me a lil review if you have ever seen me talk, run a workshop, enjoyed my videos or art etc.! 🥰 You can leave em here or DM me :) *anything you say can and will be used against you in a co… I mean, on my website 😋

Me holding a pineapple with 1,1,2,3 candles im it. It’s a very pink and cute photo

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samjshah.bsky.social @samjshah.bsky.social · 17/08/2026

I’m hypnotized. Truchet tile drawing ✍️ . #mtbos #mathart

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robertfathauer.bsky.social @robertfathauer.bsky.social · 05/07/2026

Over 5,500 mathematical artworks can now be browsed in an attractive new gallery-wall layout on the Bridges website, thanks to the efforts of Nathan Selikoff: gallery.bridgesmathart.org/gallery?seed...

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samjshah.bsky.social @samjshah.bsky.social · 16/08/2026

I’ve been sick this past week but started to feel much better today. So I started a new #mathart project. 😁 I’m probably a third of the way done. The math… Truchet Tiles: pelletierauger.com/en/projects/... I’m a novice at stained glass so we’ll see if this large thing will work. #mtbos

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Graph Time with Sara and Sean @graphtimesarasean.bsky.social · 11/08/2026

It's time for another episode of Graph Time with Sara and Sean. In this Episode, we partner up with @mathemagicland.bsky.social who makes awesome Desmos videos and we work on making a 90's-esque screensaver using parametrics in the 3d calculator. Enjoy! youtu.be/MQcBW8tKiaM?...

youtu.be

Making a 90s screensaver in Desmos

YouTube video by Graph Time with Sara & Sean

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Daniel Wilson @helsig.bsky.social · 13/08/2026

A rose curve field moving through the vertices of a triangle. #MathArt

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Daniel Wilson @helsig.bsky.social · 13/08/2026

A rose curve field moving through the vertices of a square. #MathArt

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Daniel Wilson @helsig.bsky.social · 12/08/2026

A rotating heptagon with vertices matching the contours of a rose curve. #RoseCurve #MathArt

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samjshah.bsky.social @samjshah.bsky.social · 10/08/2026

@suevanh.bsky.social pointed out it is Barbara Kingsolver who wrote unsheltered! Sorry for the mixup! I loved Whistler too. I love beautifully written and textured characters… and I loved the slow pacing.

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samjshah.bsky.social @samjshah.bsky.social · 10/08/2026

Oh yes! Sorry! I also just finished the new Ann Patchett novel Whistler… so I’m mixing everything up!

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samjshah.bsky.social @samjshah.bsky.social · 09/08/2026

She’s my current favorite author. But I just couldn’t fully fall into the book because it didn’t mirror anything I could believe re:kids/teacher. I still enjoyed it immensely. I read Ann Patchett’s Unsheltered simultaneously. Had a few of the same themes - but I loved loved loved it.

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Darth Calculus 🏳️‍🌈 @darthcalculus.bsky.social · 09/08/2026

I'm revamping my materials for the quadratics unit, including my tutorial on completing the square. I've always struggled with how to explain it without making it confusing, and I think this visual will help nicely. It uses the same mechanic as my "camera moves" animation #Desmos #EduSky #ITeachMath

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Minor Mobius @minormobius.bsky.social · 06/08/2026

Inspired by this tweet brought to me by @norvid-studies.bsky.social x.com/matthen2/sta...

x.com

Matt Henderson (@matthen2) on X

Game of Life on Penrose tiles

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samjshah.bsky.social @samjshah.bsky.social · 04/08/2026

This looks amazing! I’m sad I’m not there!

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samjshah.bsky.social @samjshah.bsky.social · 03/08/2026

That’s how I feel when I look at it. Even though if you look at it live it’s very crude, it still brings me joy!

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Darth Calculus 🏳️‍🌈 @darthcalculus.bsky.social · 01/08/2026

My latest project in #Desmos involves making programmed "camera moves" for animations. I often make graphs to show my students something specific. I have been trying to write functions that adjust the window so I can get videos like this. www.desmos.com/calculator/3... #ITeachMath #EduSky

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