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Tim Chartier

@timchartier.bsky.social
371 followers 96 following 524 posts

husband, father, friend, Joseph R. Morton Professor of Math & CS at @DavidsonCollege, sports analyst, professionally trained mime, puppeteer

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Massimo (mirror) @rainmaker1973-m.bsky.social · 4h
A little girl told the bus driver this was her favorite song, so he turned up the music and they danced together. Original post
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Tim Chartier @timchartier.bsky.social · 12h
Everyone here is chasing someone. Nobody ever catches up. A curve of pursuit: each corner of a shape steps toward its neighbor. 60 little chases in 12 petals, and the glow is just where the lines pile up. inspired by @helsig.bsky.social's posts #generativeart #mathart #creativecoding
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Daniel Wilson @helsig.bsky.social · 28/09/2026
Curves of pursuit art #MathArt
A pattern of straight lines that form curved lines. White on black background. Zentangle paradox, paradox tangles, pursuit curves.
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Tim Chartier @timchartier.bsky.social · 25/09/2026
Mona Lisa waves. #MathArt
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Tim Chartier @timchartier.bsky.social · 25/09/2026
Here's a statement I made in an email I just wrote. I liked it so much I had AI make this.
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Luca @lucagalletti.bsky.social · 24/09/2026
This rare 1920s original expanding dining table by furniture designer Josef Seiler who invented and patented the "Liegnitz Ringtisch", a mechanism that allows a round table to increase its overall diameter while remaining perfectly circular. IG; @galeriebalbach www.instagram.com/galeriebalba...
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Tim Chartier @timchartier.bsky.social · 23/09/2026
The Mona Lisa, grown the way a sunflower grows its seeds.
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Tim Chartier @timchartier.bsky.social · 23/09/2026
Stephen Curry, taking “ball handling” to a whole new level. 🏀🏀🏀 One basketball simply isn’t enough. youtube.com/shorts/Sqflc...
youtube.com
STEPH CURRY SHOW HIS INSANE JUGGLING SKILLS
YouTube video by Fusement Family
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Tim Chartier @timchartier.bsky.social · 22/09/2026
Same Great Wave. Entirely different characters. 🌊😎😂🤯 Hokusai's famous painting, reimagined as an emoji mosaic.
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Blue Wave @votebiue.bsky.social · 20/09/2026
Tell me this doesn’t give you chills. Japan opened the 12D theater. It is beyond your imagination.
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Tim Chartier @timchartier.bsky.social · 21/09/2026
Her smile may be mysterious, but the mathematics is right there in the panes. The Mona Lisa, reimagined as mathematical stained glass. #MathArt #MonaLisa
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Tim Chartier @timchartier.bsky.social · 21/09/2026
Wonderful story. 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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Digital Brain @yourdigitalbrain.bsky.social · 19/09/2026
A typeface built to feel like real handwriting, not just imitate it. Here's how this font blurs the line between type and pen.
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Tim Chartier @timchartier.bsky.social · 19/09/2026
When two photos become one… Not Photoshop—linear algebra! A linear combination of two image matrices creates something entirely new. #MathArt #LinearAlgebra
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Tim Chartier @timchartier.bsky.social · 18/09/2026
Plot twist: every line in this portrait is a polynomial. Sometimes mathematics reveals the bigger picture—if you’re willing to step back and look. Can you see the hidden image? #MathArt
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Tim Chartier @timchartier.bsky.social · 18/09/2026
They say a picture is worth a thousand words. This one brings the idea full circle. Look closely: the portrait is made entirely from concentric circles. Create your own mathematical mosaic at: lifeislinear.davidson.edu/circleArt.html #MathArt #MathematicalMosaic
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José Ángel Iranzo @ja-iranzo.bsky.social · 17/09/2026
Looks really nice! We recently published a paper on reproducing images using Tetris pieces. In our case, each type of piece is always the same color, so we work with grayscale images. doi.org/10.1080/1751... bsky.app/profile/ja-i...
doi.org
Making mosaics from Tetris®tiles
This paper addresses the problem of reproducing greyscale images using mosaics composed of tetromino tiles, the building blocks of the well-known puzzle game Tetris®. An integer linear optimization...
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Tim Chartier @timchartier.bsky.social · 17/09/2026
Pleased to have Weighted Voronoi stippling implemented. Cool look!
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Matt Henderson @matthen.com · 17/09/2026
Dragon wave
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Tim Chartier @timchartier.bsky.social · 16/09/2026
Me: builds an image generator where Tetris pieces fall into place to form a picture Also me: realizes halfway through that the pieces just phase through each other like ghosts Ship it anyway. 👻🧱
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Tim Chartier @timchartier.bsky.social · 16/09/2026
My code plays "Tetris" with your photos — squares that are "close enough" in color just... merge. No falling pieces, no line clears, just an image slowly collapsing into blocks. 🟨🟧🟫
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Tim Chartier @timchartier.bsky.social · 15/09/2026
Adaptive mesh refinement in a mosaic. Got the idea off a wall pattern during a meeting!
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Tim Chartier @timchartier.bsky.social · 15/09/2026
The pattern on a wall during a meeting caught my eye and I had an idea to mesh refine based on variation of the color in a mosaic's tile. Each triangle in this mosaic is a solid color.
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Ramin Nasibov @nasibov.me · 13/09/2026
Picasso lived for 33,000 days and created 30,000 works. Just make more.
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Tim Chartier @timchartier.bsky.social · 13/09/2026
Pixel art with 12-packs. @baabbbaash.bsky.social
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Dave Richeson @divbyzero.bsky.social · 10/09/2026
"What's the Steelers' logo?" www.youtube.com/shorts/NwQg8...
youtube.com
An audience member (#BrooksAllison) helps Jimmy break down #NFL team logos with a rap 🏈
YouTube video by The Tonight Show Starring Jimmy Fallon
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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
figure-8 immersion of the Klein bottleEnpepper minimal surfacegyroid cut by boxgenus five 'puffy cube skeleton'
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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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Ramin Nasibov @nasibov.me · 06/09/2026
pixel cat
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ContempraInn 🌹 @contemprainn.bsky.social · 05/09/2026
GOOGLE MAPS SHOWS YOU STREETS. THIS WEBSITE SHOWS YOU THE MOVIE SCENES FILMED ON THEM. it's called Movie Scene Map → moviescenemap.com 15,716 real filming locations. 166 countries. one map. click any pin. see what was filmed there.
moviescenemap.com
Movie Scene Map — Where Films & TV Series Were Actually Filmed
A free interactive map of real filming locations, built from Wikidata, plus the real places video games are set in. Search a title to see where it was shot, or a place to see what was made there.
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Massimo (mirror) @rainmaker1973-m.bsky.social · 05/09/2026
Anthony Howe is a kinetic sculptor who creates wind-driven sculptures resembling pulsing, alien creatures and vortices. This one is in downtown Montreal. Original post
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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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Tim Chartier @timchartier.bsky.social · 03/09/2026
Teach Buffon's needle to estimate pi? Here's an online simulator I had ChatGPT help me code. Took about 15-20 minutes to create. This is for the length between the lines equaling the length of the needle. lifeislinear.davidson.edu/210/buffon.h...
lifeislinear.davidson.edu
Buffon’s Needle Lab
Drop random needles and watch an estimate of π emerge.
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Tim Chartier @timchartier.bsky.social · 01/09/2026
One of the squirrels is what I think the first week of classes will feel like - the other is inevitably what happens.
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Tim Chartier @timchartier.bsky.social · 31/08/2026
He might be ready to play soccer.
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Digital Brain @yourdigitalbrain.bsky.social · 31/08/2026
A corgi gets a stronger push than expected
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Luca @lucagalletti.bsky.social · 29/08/2026
When you're mid climb but you have to stop to make friends with the locals. 🐐 IG: @cakejaggaley Chamonix, France
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Dave Richeson @divbyzero.bsky.social · 26/08/2026
Thank you, @moduality.bsky.social for pointing out the weird shadows of my impossible objects. That got me to think of yet another way to show how weird they are. Here, a light is shining down from behind at a 45° angle!
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Library of Congress @librarycongress.bsky.social · 25/08/2026
The Library is devastated to learn of the passing of Dolly Parton, a music legend and titan of children's literacy. Her Imagination Library program has earned multiple Library Literacy Awards and, in 2018, she visited us to donate its 100 millionth book to our collection and host a story time. 🦋❤️
Dolly Parton reads to children in the Library’s Great Hall in 2018. Photo by Shawn Miller.
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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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Matt Henderson @matthen.com · 22/08/2026
Filling Space
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Dave Richeson @divbyzero.bsky.social · 22/08/2026
More impossible arrows 
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Daniel Wilson @helsig.bsky.social · 23/08/2026
Flattened spherical waveform with filter effects. #Abstract #ComputerArt #CreativeCoding #DigitalArt #MathArt
A curved grid of white lines containing a filter effect resembling a moiré pattern. Math art created using Excel and Krita.
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Massimo (mirror) @rainmaker1973-m.bsky.social · 22/08/2026
Teamwork Original post
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Rae Radford @raeradford.bsky.social · 20/08/2026
Absolutely! #BookSky
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MꙬse Allain @mooseallain.bsky.social · 19/08/2026
Fibonacci Sequins - clusters of sequins forming a fibonacci sequence.
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Ramin Nasibov @nasibov.me · 19/08/2026
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Luca @lucagalletti.bsky.social · 15/08/2026
Homer Simpson disappearing into hedge (in Lego) Credit to Jason Allemann & Kristal / @jkbrickworks
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Ramin Nasibov @nasibov.me · 14/08/2026
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Digital Brain @yourdigitalbrain.bsky.social · 14/08/2026
Nine straight games without a single goal. Instead of staying quiet, fans grabbed a sign and literally pointed the team to the goal post.
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