Having fun arguing about the new arXiv policy on Twitter today. A lot of academics seem remarkably comfortable with opaque moderation systems, discretionary enforcement, and no meaningful appeals process.

For the three-year anniversary, digit.party now shows you how your score on yesterday's board compares to everyone else! (You can also go into history and see this back to day 1001.)

digit.party

match numbers, score points. daily challenge + random boards

digit.party

Hot take: The trapezoid area formula isn’t math, it’s an algebra trick. Teach kids to cut trapezoids up instead. When are they ever going to use that formula outside math class anyway?

A pair of problems by Jay Pantone, who works in analytic combinatorics, were solved earlier: one by GPT-5 and one by GPT-5.1. GPT-5.2 Pro solved these as well. The solutions were both valid, but Jay noted that both used numerical shortcuts that he didn’t intend.

🟥🟥🟧🟧⬜ 🟥🟦🟦🟧⬜ ⬜🟦🟦🟦⬜ 🟪🟪🟫🟩🟩 🟪🟪🟪🟫🟫 day 1010: 120 points 78% digit.party

Digit Party! m.twitch.tv/videos/26561...

Playing random web games on my phone - taltech on Twitch

taltech went live on Twitch. Catch up on their Games + Demos VOD now.

m.twitch.tv

Digit Party just went over 1000 days! Robert Brignall and I celebrated by redesigning the whole thing. Place digits, match neighbors. 🟧🟧⬜⬜🟥 ⬜🟧🟧🟥🟪 ⬜⬜🟥🟪🟫 ⬛🟥🟫🟫🟫 ⬛⬛⬛🟫🟫 day 1001: 146 points 66% digit.party

Digit Party just went over 1000 days! Robert Brignall and I celebrated by redesigning the whole thing. Place digits, match neighbors. 🟧🟧⬜⬜🟥 ⬜🟧🟧🟥🟪 ⬜⬜🟥🟪🟫 ⬛🟥🟫🟫🟫 ⬛⬛⬛🟫🟫 day 1001: 146 points 66% digit.party

Everyone hates springing forward but loves falling back. Proposal: Abolish leap days, and redistribute those hours in the form of 6 annual "fall back" holidays. More sleep, less leap. A clear pareto improvement to our calendar.

I'm excited to share: we built a free AI coach for intro-level proof writing. It critiques drafts, points out gaps, and helps you or your students iterate without giving away the answer. Also for lapsed mathematicians to see if they've still got it. Demo below, link in reply.

Published today in the Notices of the AMS. Lol.

meanwhile, wikipedia is in existential crisis over whether √4 deserves its own page

Vince Vatter@vatter.bsky.social · last yr.

interest in the natural numbers is at an all-time low

interest in the natural numbers is at an all-time low

Just to say how much I like the digit party game digit.party created by Robert Brignall and @vatter.bsky.social.

digit.party

match numbers, score points. daily challenge + random boards

digit.party

Of course they would choose a math major

Vince Vatter@vatter.bsky.social · last yr.

It’s final exam season again, and I like to display a clock while proctoring. But all the web clocks google suggests suck. So I made one (okay, tbh, chatgpt made it under my supervision): digit.party/clock

Digit Party Clock

A minimalist analog and digital clock. Perfect for proctoring exams, or just keeping time beautifully.

digit.party

AI debt collector exhibiting speciesism

you're what now chatgpt?

I mean, it’s still better to have money than not have money right?

you'll never guess what color my daughter's squares ended up

Everyone hates springing forward but loves falling back. Proposal: Abolish leap days, and redistribute those hours in the form of 6 annual "fall back" holidays. More sleep, less leap. A clear pareto improvement to our calendar.

Logical proof that "months" are fake. Most people born in April are Aries. All Aries are born in March or April. Most people born in March or April were born in March. Therefore, most people born in April were born in March.

I asked GPT-4o to flip a coin 10,000 times. Same prompt, same parameters, but the *odds of getting Heads* took on 42 different probabilities (none below 85% btw). Obv don't use gpt-4o to flip your coins, but what the hell is going on? Here are some thoughts. towardsdatascience.com/avoidable-an...

Avoidable and Unavoidable Randomness in GPT-4o | Towards Data Science

Exploring the sources of randomness in GPT-4o from the known and controllable to the opaque and uncontrollable.

towardsdatascience.com

Actually it's ok to divide by zero as long as you use the proper facilities. 🧮

Tom Gauld@tomgauld.bsky.social · last yr.

My latest cartoon for @newscientist.com #science #mathematics

There's an article in Scientific American today about superpermutations mentioning @robin.boskerenterprises.com, @gregegansf.bsky.social, @njohnston.ca, @jaypantone.com, me, and of course, “Anonymous 4chan Poster.” www.scientificamerican.com/article/the-...

How Anime Fans Stumbled upon a Mathematical Proof

When a fan of a cult anime series wanted to watch its episodes in every possible order, they asked a question that had perplexed combinatorial mathematicians for years

scientificamerican.com