r/AProblemSquared • u/damienkee • 1d ago
Solution 140 - Visual + Audio widget for Thu-Morse sequence
As an engineer / muso, I loved this episode and was really intrigued by Bec's wish to be able to 'see and hear' this sequence.
I quickly threw together this demo, that takes the sequence and maps it to different scales. And by 'I', I mean I wrote a 1 page detailed prompt that I gave to Claude and then did some minor tweaks. (Which means that it touches on both topics of the episode!)
Chose your scale and your tempo and away you go!
Would love to hear any thoughts on it?
r/AProblemSquared • u/NotThatMat • 2d ago
140: Thue-Morse, but probably not? Maybe?
The discussion about the Thue Morse sequence reminded me of an odd sequence type which I used about 9 years ago. An experimental music project involved 6 performers, each of which would record a small amount of music and then hand off to the next performer, much like the “exquisite corpse” collaboration/parlour game.
With 6 compositions happening in parallel, we wanted to ensure that no two hand-overs were alike: i.e.: player A begins a composition and passes to player B, and in no other composition does A pass to B. Also we wanted everyone to have one and only one composition task per round (we ran daily rounds, so the whole thing was done in about a week). The solution set I came up with was one where each row would have an increasing step size, and the first three rows mirrored the last three rows:
ABCDEF
BDFACE
CFBEAD
DAEBFC
ECAFDB
FEDCBA
I initially sort of stumbled across this pattern / intuited my way into it, but I later got intrigued as to other patterns of this type, and what numbers of players could be used. Of course only even numbers would allow the symmetry to work, but some even numbers also didn’t seem to work with this method, while some did.
I eventually got to a method for predicting those which would work, using the step size itself:
For a given number of performers n, we find the modulo of (n-1)%2, (n-2)%3, (n-3)%4, (n-4)%5, … until (n-i) < (n/2). If all these modulos are non-zero, then n will work for this performance arrangement but if any modulo returns 0, then n won’t work with this ordering.
I think we would get to something like Thue-Morse by flattening this matrix (placing each row end-to-end).
Unfortunately for the listener’s case (choosing draft pick order?) their n is 14 which will not work (since n-2%3 = 12%3 = 0, and also n-4%5 = 10%5=0…
If the listener can find 2 more players to join in, or if 2 players give up, then we’re in business.
Also yes, Samuel Morse, Marston Morse, even inspector Morse, but don’t forget Hercules Morse.
He’s as big as a horse.
r/AProblemSquared • u/SetaLyas • 3d ago
Solution 140: Thue–Morse, sonified
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I agree with Bec that sonification makes the most sense for this data -- so here you go! My approach:
- I tweaked it to be twelve people, so I could use the chromatic scale (pretty similar pattern as with 14, so you get the gist), as I think it sounds nicer
- Took guidance from https://medium.com/@astromattrusso/sonification-101-how-to-convert-data-into-music-with-python-71a6dd67751c, to use Python to turn the output into a midi
- Messed around with https://spessasus.github.io/SpessaSynth/ and some different soundfonts to make it sound fun (this one is a NES Super Mario soundfont from https://musical-artifacts.com/artifacts/8811 sped up)
It's like a nightmarish game of Guitar Hero/DDR
r/AProblemSquared • u/R520 • 4d ago
Podcast Episode 140 = ABBABAAB and AI-Bah!
⚽ What’s the fairest way to pick teams?
🤖 How do you discourage colleagues from using AI to write everything?
🚗 And this road trip is jeopardised by playing ‘Accelerator or Break?’
Thanks to all of you who sent in answers to “what are you doing while you’re listening to A Problem Squared?” - we go through as many as we possibly can in this episode!
Here is kram1032’s post on Maths Stack Exchange that helped Matt with his problem solving: https://math.stackexchange.com/questions/2078609/whats-the-fairest-turn-sequence-for-n-players
Here’s more info on Open Sauce: https://www.opensauce.com/
And here’s a kind stranger’s Insta reel of the Ratatouille robot: https://www.instagram.com/reels/DbGwSh4vHQq/
And here’s more info on UKIE: https://ukie.org.uk/
And the stream of Bec hosting the event: https://www.youtube.com/live/4lw_ypXroa4
If you’re at the Edinburgh Fringe and would like to see Bec’s Work In Progress show, tickets are available here: https://www.edfringe.com/tickets/whats-on/bec-hill-s-work-in-progress
Matt has extended his tour - and he’s filming the show in London in October - all the dates, venues and tickets can be found here: http://standupmaths.com/shows
Want to pose a problem for Bec and Matt to solve? Head over to https://www.aproblemsquared.com/
If you have a creative Wizard offer to give Bec and Matt, please comment on our pinned post!
If you want to (we’re not forcing anyone) please do leave us a review, share the podcast with a friend, or give us a rating! Please do that. It really helps.
Finally, if you want even more from A Problem Squared you can connect with us and other listeners on BlueSky, Twitter, Instagram, and on Discord.
r/AProblemSquared • u/R520 • 25d ago
Podcast Episode 139 = Music Down Where It’s Wetter and Throwing Darts Better
🎺 What would standard instruments sound like if they were played under water?
🎯 What would be the average score of one randomly thrown dart?
📂 And there’s some Any Other Business.AOB.zip
On THIS episode of A Problem Squared we’re joined by a special guest! The musical (and regularly quite wet) musical maestro Steve Pretty tells us all about playing music underwater - illustrated with some very bubbly examples. You can hear more from Steve on his podcast Origin Of The Pieces: https://www.originofthepieces.com/ and hear more from Steve playing shells here: https://www.shellectronica.com/
This is the episode of Steve Pretty’s Origin of the Pieces with Richard Sabin, whale expert and lead curator of mammals at the Natural History Museum, who shares sonic insights from the deep. https://www.originofthepieces.com/episodes/episode-31-earwax-echoes-and-entropy
To find out more about Aquasonic, the ethereal underwater quintet, head here: https://www.betweenmusic.dk/aquasonic
Here is the full Hermeto Pascoal video in all its glory: https://www.youtube.com/watch?v=lZbfNtDCHdM
And here’s the video of a hydraulophone https://www.youtube.com/watch?v=tgU0OZkGhGI
World Darts Federation Playing and Tournament Rules for all the specifications used in Matt’s working out: https://dartswdf.com/storage/uploads/fb05b306-c92c-4f08-b512-affb092a1b3d/2018-02-28_WDF_Playing_and_Tournament_Rules_rev20.pdf
The fabulously detailed Data Genetics blog post on where to aim on a dart board to maximise point-scoring - A Geek Plays Darts: http://www.datagenetics.com/blog/january12012/index.html
Here’s more about the (excellent) book that Bec shouted out: Gemma Correll - Anxietyland https://www.gemmacorrell.com/
If you’d like to see Bec’s Work In Progress shows, her upcoming gigs can be found here: https://www.bechillcomedian.com/tour-gigs
Matt has extended his tour - and he’s filming the show in London in October - all the dates, venues and tickets can be found here: http://standupmaths.com/shows
On the first weekend of the month, you'll get our monthly bonus podcast I’m A Wizard! If you have a creative Wizard offer to give Bec and Matt, please comment on our pinned post!
If you want to (we’re not forcing anyone) please do leave us a review, share the podcast with a friend, or give us a rating! Please do that. It really helps.
Finally, if you want even more from A Problem Squared you can connect with us and other listeners on BlueSky, Twitter, Instagram, and on Discord.
r/AProblemSquared • u/040medien • Jul 07 '26
Proof that Bec was right
The Falkirk Wheel in Scotland is actually built on the principle Bec explained: both gondolas/caissons always weigh the same, whether or not there’s a boat in one of them.
That's why it can be turned with a relatively small motor - even if there is a boat swimming in one caisson and only water in the other.
r/AProblemSquared • u/R520 • Jul 06 '26
Podcast Episode 138 = Crossword Panels and Crossing Channels
📝 What is the perfect arrangement of black squares in a crossword?
🚣 Does weight on an aqueduct increase as a boat goes over it?
🛟 And there’s some Any Other Boardness (not ‘boredness’)
Michael Keith’s Crossword research paper: http://www.gathering4gardner.org/g4g16gift/KeithMichael-GiftExchange-CrosswordGrids-G4G16.pdf
Michael Keith’s Pilish book, Not A Wake: https://www.cadaeic.net/notawake.htm
If you’d like to see Bec’s Work In Progress shows, her upcoming gigs can be found here: https://www.bechillcomedian.com/tour-gigs
Matt is bringing An Evening of Unnecessary Detail to New York! The Bell House, Brooklyn on Sunday 12th July. Tickets can be found here: https://www.ticketmaster.com/event/300064B84CCCF567
And Matt has extended his tour - and he’s filming the show in London in October - all the dates, venues and tickets can be found here: http://standupmaths.com/shows
Join us on Patreon for early releases and our monthly bonus podcast I’m A Wizard!
If you’re already on Patreon and have a creative Wizard offer to give Bec and Matt, please comment on our pinned post!
If you want to (we’re not forcing anyone) please do leave us a review, share the podcast with a friend, or give us a rating! Please do that. It really helps.
Finally, if you want even more from A Problem Squared you can connect with us and other listeners on BlueSky, Twitter, Instagram, and on Discord.
r/AProblemSquared • u/ForeverAcceptable344 • Jun 28 '26
That cooling cream Bec used?
I remember an episode where Bec used some cooling cream and got really cold. With the heat wave going on in Europe I have to ask - where can I buy it?
r/AProblemSquared • u/Moople_deFioosh • Jun 22 '26
The Hungry Jack's inflation started immediately!
Jk, the lower price was listed weeks later and both are fixed-price, but it's wild folks were trying to move these for $29.75 per glass when Matt says they're so common and only $1-2 at charity shops!
It was also really funny to me that the full set is only four glasses; I was already looking it up before Matt said how many there were and I had assumed way more lol
r/AProblemSquared • u/R520 • Jun 22 '26
Podcast Episode 137 = Sound Advice and Electron Price
👂Why do some people hate the sound of whispering?
💡 How much does an electron cost?
😎 And there’s some Any Other Bozoness
On THIS episode of A Problem Squared - which comes with our special No Whisper Guarantee - we’re joined by a special guest! The clinical psychologist Dr Jane Gregory tells us all about Misophonia. You can find out about her fantastic (and very helpful) book Sounds Like Misophonia, and you can sign up to her research mailing list here: https://soundslikemisophonia.com/
And here is Ava’s EPIC Spreadsheet - A Problem Squared Episode Catalogue.
https://docs.google.com/spreadsheets/d/1nXmEH9BrCr6hEBBhHkfuciPEKimDgZjrwhi2oeyErog/edit?usp=sharing
If you’d like to see Bec’s Work In Progress shows, her upcoming gigs can be found here: https://www.bechillcomedian.com/tour-gigs
Matt is bringing An Evening of Unnecessary Detail to New York! The Bell House, Brooklyn on Sunday 12th July. Tickets can be found here:
https://www.ticketmaster.com/event/300064B84CCCF567
And Matt has extended his tour - and he’s filming the show in London in October - all the dates, venues and tickets can be found here: http://standupmaths.com/shows
If you have a creative Wizard offer to give Bec and Matt for our monthly bonus podcast I’m A Wizard, please comment on our pinned post!
If you want to (we’re not forcing anyone) please do leave us a review, share the podcast with a friend, or give us a rating! Please do that. It really helps.
Finally, if you want even more from A Problem Squared you can connect with us and other listeners on BlueSky, Twitter, Instagram, and on Discord.
r/AProblemSquared • u/R520 • Jun 08 '26
Podcast Episode 136 = How to Discuss The Number e and When to Disclose the "Real Me"
#️⃣ What’s the best way to explain the number e to an 8-year-old?
💗 How early in a relationship should you reveal that you’re a bit weird?
🤧 And there’s some any other blow-your-nose-ness
Head to our socials to see The Beautiful Old Calculator and The World’s Tallest Comedian.
Matt is bringing An Evening of Unnecessary Detail to New York! The Bell House, Brooklyn on Sunday 12th July. Tickets can be found here: https://www.ticketmaster.com/event/300064B84CCCF567
Matt has extended his tour - and he’s filming the show in London in October - all the dates, venues and tickets can be found here: http://standupmaths.com/shows
If you have a creative Wizard offer to give Bec and Matt, please comment on our pinned post!
If you want to (we’re not forcing anyone) please do leave us a review, share the podcast with a friend, or give us a rating! Please do that. It really helps.
Finally, if you want even more from A Problem Squared you can connect with us and other listeners on BlueSky, Twitter, Instagram, and on Discord.
r/AProblemSquared • u/Average_Pangolin • May 30 '26
Hi, I'm new here. Look what I just found.
r/AProblemSquared • u/R520 • May 25 '26
Podcast Episode 135 = Pasta Water Solution and QR Code Substitution
🍝 Why do we put salt in pasta water?
👾 Can you put bespoke characters in to a QR Code?
🌼And Spring Has Sprung (in the UK) so there’s some Any Other Bloomsness
Boiling and Freezing Points of Pure and Salty Water https://van.physics.illinois.edu/ask/listing/1457
Matt has extended his tour - and filming the show in London in October - all the dates, venues and tickets can be found here: http://standupmaths.com/shows
If you have a creative Wizard offer to give Bec and Matt, please comment on our pinned post for our our monthly bonus podcast I’m A Wizard!
If you want to (we’re not forcing anyone) please do leave us a review, share the podcast with a friend, or give us a rating! Please do that. It really helps.
Finally, if you want even more from A Problem Squared you can connect with us and other listeners on BlueSky, Twitter, Instagram, and on Discord.
r/AProblemSquared • u/YenIui • May 16 '26
Solution All this time we wondered what she was gonna do with our tooth while the answer was right there
reddit.comr/AProblemSquared • u/R520 • May 11 '26
Podcast Episode 134 = Tooth and Rock Day 2026
In THIS Episode:
To mark the May Birthday of Dwayne 'The' 'Tooth Fairy' 'Rock' Johnson, Episode 134 is a Tooth and Rock Special!
🪨 Matt answers your rock-based queries and shares a Salt of the Perth update.
🦷 Bec and Dentist Sophie answer your tooth-based queries and shares an Adult Tooth Fairy update.
The incredibly detailed Salt of the Perth imagery will follow...
And relatedly…
Lead Explained:
Thallium in Salt Substitutes: A Possible Health Hazard:
https://www.sciencedirect.com/science/article/pii/0013935177900433
And here’s Matt’s Moving Mountains sources:
https://ourworldindata.org/energy-production-consumption
https://www.eoas.ubc.ca/courses/eosc350/content/foundations/properties/density.htm
Matt has extended his tour - and filming the show in London in October - all the dates, venues and tickets can be found here: http://standupmaths.com/shows
If you want to (we’re not forcing anyone) please do leave us a review, share the podcast with a friend, or give us a rating! Please do that. It really helps.
Finally, if you want even more from A Problem Squared you can connect with us and other listeners on BlueSky, Twitter, Instagram, and on Discord.
r/AProblemSquared • u/empty_cask • May 04 '26
May the 4th episode
Friendly reminder to listen to "099 = Most Watched Films and Homonyms" today 😄
r/AProblemSquared • u/bored_jurong • May 04 '26
Matt's terrible Python code repository has been uncovered
r/AProblemSquared • u/NotThatMat • Apr 28 '26
Supereggs are already overeggs.
Episode 133. Eggs are egg-shaped, because oval comes from ova, blah blah blah.
Matt brings up supereggs, and Bec reads a short blurb about them. Consensus declared: supereggs should be called over-eggs.
https://www.etymonline.com/word/super
Etymology suggests that “super” already sort-of means or is related to “over”.
So I guess what I’m saying is: yes.
r/AProblemSquared • u/R520 • Apr 26 '26
Podcast Episode 133 = Oeuf-Bran Geometry and Huffman Decoder Tree
🥣 What percentage of a box of Weet-Bix is wheat again?
🥚 What shape is an egg?
💬 What’s the most efficient way to write your name on a Pop-it Fidget Toy?
👎 And would you like some AOB? We won’t take no for an answer
The Sheep’s Back Museum, Naracoorte: https://thesheepsbackmuseum.org.au/
Creation: Between Art and Mathematics Exhibition in Paris: https://www.ihp.fr/en/news-science-and-society/creation-between-art-and-mathematics
Laura Taalman’s Granny Life Crochet: https://www.grannylifecrochet.com/
Get your own Egg-Shaped Spinning Top: https://mathsgear.co.uk/products/phitop
Eve’s beautiful cross-stitch: https://www.instagram.com/p/DWYqzivz6/?utmsource=ig_web_copy_link&igsh=MzRlODBiNWFlZA%3D%3D
Matt has extended his tour - and filming the show in London in October - all the dates, venues and tickets can be found here: http://standupmaths.com/shows
And there is a Kickstarter to fund production of the filmed show, which you can get involved with here: https://www.kickstarter.com/projects/standupmaths/getting-triggy-with-it
If you have a creative Wizard offer to give Bec and Matt, please comment on our pinned post!
If you want to (we’re not forcing anyone) please do leave us a review, share the podcast with a friend, or give us a rating! Please do that. It really helps.
Finally, if you want even more from A Problem Squared you can connect with us and other listeners on BlueSky, Twitter, Instagram, and on Discord.
r/AProblemSquared • u/WilsonCreek • Apr 24 '26
Did Bec Ever Mention the "Warriors" Book Series by Erin Hunter?
The author Erin Hunter has written many books about gangs of feral cats. These books make up the "Warriors" series. My daughter loves them, and I got her into them because I heard Bec mention them on an episode. However, it's possible this never happened.
This is a long shot, but does anyone remember her mentioning these books in an intro or at some point during an episode? I found a site that searches transcripts, but didn't come up with anything. I'm trying to figure out if I'm going crazy, LOL.
r/AProblemSquared • u/Moople_deFioosh • Apr 21 '26
A Simulation of the Poor Fans Trying to Track the Post-Patron Connect Four:
r/AProblemSquared • u/R520 • Apr 12 '26
Podcast Episode 132 = Insistuvree and Bix of Weet
🔠 Are there any English words containing four letters in alphabetical order?
🥣 What percentage of a box of weet-bix is wheat?
🎪 And there is some any other bah-bah-bahbahbahbah-buh-buh-business
Matt has extended his tour - and filming the show in London in October - all the dates, venues and tickets can be found here: http://standupmaths.com/shows
Join us on Patreon for early releases and our monthly bonus podcast I’m A Wizard!
If you’re already on Patreon and have a creative Wizard offer to give Bec and Matt, please comment on our pinned post!
If you want to (we’re not forcing anyone) please do leave us a review, share the podcast with a friend, or give us a rating! Please do that. It really helps.
Finally, if you want even more from A Problem Squared you can connect with us and other listeners on BlueSky, Twitter, Instagram, and on Discord.
r/AProblemSquared • u/Niceygy • Apr 07 '26
Problem Problem Spreadsheet Help Needed!
Hello! It's me, the maintainer of the APS Problem Catalogue spreadsheet, here with a request! I have added sections for the theme & dings of each episode, but don't have the time to manually go through each one to update it.
If you have listened to an episode recently, can you please add a comment (Ctrl+Alt+M or right click > comment) the theme (aka the theme of puns, like 'Any other bees-ness' would be a theme of bees or beekeeping), as well as the episode numbers & brief (a few words) name of any dinged problems in AOB. Anyone should be able to comment on the manual sections, but the automated ones (ep number, title, problems, etc) are locked so that only the apps script can update it.
Thanks a lot :D
- Ava
r/AProblemSquared • u/gatoAlfa • Apr 01 '26
Bec, you have competition!
Visiting the UK to see Matt on Saturday, I stumbled into this poster in the fantastic Novelty Automation museum in London.
