See my video on this! youtu.be/OSL5z-fzBsg?...

The “spiral trigonometric” functions, named coss(x) and sins(x) by @mathandcobb.bsky.social. These are solutions to the third-order differential equation y'''=y.

Happy Pythagorean Theorem Day! 9+16=25, or 3^2+4^2=5^2. This is the unique date every century with this property! 🤩 youtu.be/cApa8UKUls8

I called it!

ok well everything sucks but I made minor contributions to a really cool paper that we just put up on the arxiv

The University of Arkansas is hosting a lecture series by Bjorn Poonen on "Undecidability related to arithmetic geometry" and they have some NSF funding to assist with travel! Please share widely. math.uark.edu/research/spr...

REAL ANALYSIS IS A *SCAM* (not really, but hear me out) (I made this video specifically for @rhymeswithspecimen.bsky.social 's amusement). youtu.be/43uBS5BJ4Gg?...

Is Terry Tao the "greatest mathematician alive"? What does "greatest" even mean? youtube.com/shorts/0X0wM...

We have just published the 2025 edition of the Team-Based Inquiry Learning (TBIL) Resource Library. This includes activity books and exercise banks for Precalculus (new!), Calculus (1 & 2), and Linear Algebra. tbil.org/library/

A sketch of the graph of a hyperbolic paraboloid 🤩 (z = x^2 - y^2)

It has been the honor of my life to serve as Commissioner of BLS alongside the many dedicated civil servants tasked with measuring a vast and dynamic economy. It is vital and important work and I thank them for their service to this nation.

I am advertising for 4 post-docs to come to Imperial and formalize, in Lean, *statements* of theorems from recent issues of the top generalist pure mathematics journals. www.imperial.ac.uk/jobs/search-... Positions are for 2 years, start date 1st Oct this year. Deadline 15th August.

Who's the better mathematician? Euler or Gauss? Only Kaia can decide: www.facebook.com/share/r/15fK...

Are you someone who communicates complex #mathematics to non-expert audiences? Then check out the Mathsci-comm network, which we've set up with support from the Newton Gateway and the Newton Institute in Cambridge mathsci-comm.maths.org

Here is crazy idea... Would private brands sponsor a math summer school? For some brands, it would be a marketing no brainer... for $60K you can earn the good will of the entire math community!? And help make progress in STEM in the USA??! www.tiktok.com/@mathandcobb...

This is great. I would love to hear more strategies to get the word/cry out!

Absolutely! Here at the University of Washington, our academic worker union is hosting a town hall with our congressperson next month to demand an end to cuts to NSF & NIH. Would be great to hear that folks at other schools are doing the same.

Scientific American thinks mathematicians are being quiet about the devastating NSF funds to our field. We need to be LOUDER. www.facebook.com/share/r/1J3Z...

I am hearing now that it is Sunday. I am hearing this just now for the first time. Please conduct yourself to the #MathCoffeeSelfie thread below.

Age verification? 5 1/4 floppy disks.

"Topology is a dense forest of counterexamples. A usable map of the forest is a fine thing. Paraphrased from Mary Ellen Rudin's review of Counterexamples in Topology" @acidlich.bsky.social

I met @clontz.org and got to hear him speak about the very cool project pi-Base! topology.pi-base.org

If you know of advanced undergrads or junior grad students interested in number theory, please pass info about PAWS along to them and encourage them to participate! swc-math.github.io/aws/2026/202...

Get in, we’re visualizing elliptic curves over finite fields From here: elliptic-curves.art

must be incredibly frustrating and disheartening to have federal funding that was promised to you for important work suddenly and arbitrarily ripped away

If you're the type of mathematics teacher who likes to give exercises requiring exact values of trig functions, but is bored with the old 30°-45°-60° grind, then the Ailles rectangle may be for you! (Seriously, this thing is why I can write down sin(15°), cos(75°) etc without using identities.)

🚨🚨 Friday night news drop from National Science Foundation!! 🧪 NSF just released its detailed budget request for next year: nsf-gov-resources.nsf.gov/files/00-NSF... We knew it was going to be bad...and it lives up. Guts direct NSF support for a **quarter million people** 🧵 on some highlights...

I made a (TikTok and YouTube) video pointing out the unethical scientific behavior of Isaac Newton and, oh boy, the commenters who are just willing to throw all ethics out the window for their boy Newton... Here are some of the most stunning replies: youtu.be/7hWpIYKuK2Q?...

Incredibly bad (changes to N.S.F. funding for math):

Available now: Talking Points for Saving NSF. The President’s FY2026 budget request proposes a staggering 56% cut to NSF. We must #SaveNSF. Contact your Congressional representatives today and urge them to fully fund NSF. Link to: www.ams.org/government/t...

One of my daughters recently had a concussion so severe that she lost short term memory and she was stuck in a 30 second loop of the same five questions, as in the skit, but for about five consecutive hours. The scariest moment of my life. She is almost fine now!

In the Spring 25 semester, I taught and recorded all my lectures for my "first course in abstract algebra" (undergrad level) and the course is now completely available on YouTube. The course covers basics of groups up group actions, class equations, and the Sylow thms. youtube.com/playlist?lis...

Reminder. The orbit of the Moon about the Sun is convex. physics.stackexchange.com/a/266444 Although the Moon is simultaneously in Orbit about the Earth, nevertheless the Earth moves sufficiently each month that the Moon's trajectory around the Sun is convex.

Staff members at the US National Science Foundation (NSF) were told on 30 April to “stop awarding all funding actions until further notice,” according to an email seen by Nature. https://go.nature.com/44Ugf9V

Happy Easter to those who celebrate!

Honestly, Aimee Lou Wood's performance was probably the best part of White Lotus season 3.

PS: The number of Math Education winners this year? 1. Out of a thousand. So, please remember as various outlets lament the state of mathematics education that those going into its formal study are not being supported. That one awardee may be *awesome* and/but we need more people to effect change!

Ln(20+25+(20+25)/(20*25-1)) =Ln(20)+Ln(25)+Ln((20+25)/(20*25-1))

Ln(1+3/2+5) =Ln(1)+Ln(3/2)+Ln(5) Ln(6/7+2+4) =Ln(6/7)+Ln(2)+Ln(4)

Give ALL the awards to the kid from "Adolescence" already.

It's the second time that I'm interviewed for Telemundo but then cut out for time 😭

Breaking News: Trump imposes a 25% tariff on all proofs by induction, 50% on strong induction.

“UConn Star Paige Bueckers Is Waking Up at 5 a.m. During March Madness to Support Her Muslim Teammate ‘She makes really good scrambled eggs,’ El Alfy said of Bueckers, her teammate and roommate”

Math jobs seems to be back up!

MathJobs is *still* down, nine days after the original outage. This is a HUGE problem for applicants and hiring committees at a very stressful and high stakes moment in the hiring season. What is the timeline for restoring MathJobs, @amermathsoc.bsky.social? Can we trust MathJobs in the future? 🧮

Oh the @amsmath.bsky.social is now on BlueSky... can you please give us an update on when MathJobs.org will be back up online? As you know this is a *critical* time for job applicants.

During the chaos of Signalgate, these extremely concerning news seem to not be getting the urgent attention they deserve. apnews.com/article/voti...

Mathjobs is still down.

Remember when we were all debating the security risks of *TikTok*

Someone just texted me a proof of the Riemann Hypothesis by mistake! Now what do I do.