My proof of the Riemann Hypothesis is 95% done. The remaining 5% is just showing that all of the non-trivial zeros have real part 1/2, and then typing it up.

He was our graduation speaker that year. A few days before the ceremony, we got a terse email, saying: “due to extenuating circumstances, Douglas Adams will not be able to make it.” No other explanation given.

Here's me talking about Rubik's cubes on Numberphile. Ok fine, me talking about Rubik's cubes and Huge Numbers. How many different possible scrambles are there for puzzle cubes bigger than Rubik's classic? youtu.be/SAtFZPtbMpI?...

The entire board behind the National Science Foundation was fired on Friday. They were planning to release a report on how the U.S. is ceding ground to China on scientific endeavors. The Trump admin likes to say we’re competing with China but in reality this is just an excuse to not regulate AI.

Today’s Happy Hour tab. #8647

Great short video by @mathandcobb.bsky.social on the applicability of Group Theory! youtu.be/n_w_J48oAwU

Fun fact. Last time Orban lost an election as the incumbent, it was 2002. I was living in Budapest 🇭🇺, and the city was filled with 3-4 variants of this suggestive political “PG-13” ad. “We are going to vote. AND YOU?” 1/3

Magyarország!!! 🇭🇺🇭🇺🇭🇺

Brutal.

Hey #MathSky! Now that we have a direct contact with the NYT Games Team, this is our chance to tell them about all of the legitimate math words that Spelling Bee won’t accept. If you remember any specific ones, reply with them here. Let’s make a list!

There wasn’t a single Democratic elected official who celebrated Charlie Kirk’s death. Not one. Donald Trump is openly celebrating Robert Mueller’s death and no Republicans are condemning him. Both sides are not the same.

I’m doing pretty well so far, but my 3-year-old son’s bracket is in the top 99.96% at ESPN.

NSF Update through March 13, 2026 1/2

The 2026 National Science Foundation budget is $8.75 Billion.

Regardless of whether you think we should keep, abolish, or make permanent Daylight Savings Time, as long as we have it, here's an idea EVERYONE should agree on. We should change our clocks Friday night instead of Saturday. And the Super Bowl should be on a Saturday. Who would be against this??

Well, it finally happened. My first grader challenged me to a Rubik cube speed competition, she beat me three times in a row, and I’m never gonna hear the end of it.

Hey #MathSky, let's play some Jeopardy! Here's the answer. What is the question? Best response wins.

As I was posting this, the possibility of a pi Super Bowl final score, strip sack returned for a touchdown. (Not complaining. #GoHawks)

LET’S GO SEAHAWKS!!! 💙💚💙💚

Rather than have my daughter do her eLearning assignment to the letter, I introduced her to the Euler characteristic.

Current batch of water kefir. Ingredients include tomatoes, kale, beets, carrots, garlic, apples, cantaloupe, ginger, and Yuzu.

Question for parents: What’s a good age to get introduce kids to coding, and how? What languages? Curious to hear your thoughts, especially hindsight. Thank you!

My 7-year-old called out her grandfather for cursing after he called a certain politician a f*cking maniac, and I couldn’t be prouder of both of them.

Lazy Christmas Eve, waiting for Santa with my first grader on my lap, engrossed in a Rubik’s cube.

Obligatory post

My first grader is VERY amused by the score of this game. 🙄

Pre-order Chad’s book, y’all! 👇

Hey #MathSky! Are you posting to the arXiv soon? Do the following first in Overleaf: File→Settings→Compiler Change pdfLaTeX to XeLaTeX Then put this in your preamble: \usepackage{fontspec} \usepackage[english]{babel} \babelfont{rm}{Carlito} % Calibri clone Spread the word!

I spent two years in the Trump administration. During that time, I saw how the president handled national security decisions. One of my biggest takeaways was this: He fantasized regularly about maiming & killing unarmed civilians. Actually.

Penultimate harvest of 2025. The last 12 lbs of kiwi, 24 lbs of Yuzu, and a handful of flying dragon citrus. The colors look a little off because this picture was taken 12 minutes after sunset.

Leftovers

Too funny not to share!

Hearing news that Carl Dieffenbach, the Director of the Division of AIDS at #NIH (NIAID), has been removed from his position because he was "not aligned with HHS/OMB." Russell Vought continues to remove great scientists as part of the Project 2025 mission to politicize and destroy NIH. 🧪 1/

Today’s xkcd made me cry. In a good way. xkcd.com/3172/

More fall fruit that I’m growing. Fun facts: the kiwis can’t be picked until the first freeze (last week). The Yuzu has survived single-digit (F) temperatures.

This talk was given on September 12 in the New York Combinatorics Seminar. Here's a link to the recording. youtu.be/BX6VkFHwn-g?...

Fall in my orchard. Flying dragon hardy citrus in front of Fuyu persimmon fall foliage.

I got *a lot* of positive feedback about this sign tonight from (parents of) trick-or-treaters.

You know who’s not? #GoMs #TridentsUp 🔱

Looking for suggestions! I rarely watch mainstream movies, but I enjoy international films, especially from non-Western cultures. But I don’t know how to find the best ones. Do you have any favorites? Here are some I’ve watched in the past few years.

I'm sure this will be controversial, because it's a pro-AI post on a notoriously anti-AI site (BlueSky). I'm almost 45 and have never written a UNIX shell script. So I asked ChatGPT for help, and it gave me the following in a matter of seconds. It's really good at this sort of thing. 1/2

One of the silver linings of being a lifelong fan of one of the least successful baseball teams is that I had COMPLETELY forgotten how stressful this is! 😩

GET OUT THE MUSTARD AND RYE BREAD!!! I can hear Dave Niehaus calling it. 🔱🔱🔱🥹

BIG DUMPER!!! 🔱🔱🔱🔥🔥🔥

This is just embarrassing. Has to be one of the worst strike calls of the year. #TridentsUp 🔱

Watching the game with my kids. The Mariners score, and the 9 changes to a 10. My 2-year-old son Felix looks back at me, points at the TV, and says “mo mo! mo mo!” as he puts his hands together to make the baby sign for “more”. 🥹😂🔱💙💛

Mathematical Finance event in Wellington called the New Zealand All Black-Scholes

Numerical Linear Algebra event in Florida called the Tampa Bay Rayleigh quotients

Group theory event in India called the Lucknow Supersolvable Giants