Daina Taimina, a Cornell University mathematician uses crochet to demonstrate Hyperbolic Geometry #womensart

Chat, does this apply to academia?

People of all ages should know about this man [especially white people because some of you continue to pretend that people didn't know that enslaving Africans WAS WRONG at the time].

Benjamin Lay was out there THROWING FAKE BLOOD on Quakers in the damn EARLY 1700s because HE KNEW that enslaving Africans was a SIN, INHUMANE and should end IMMEDIATELY.

Seriously, it is a small luxury but if you have $10 and like charming apps, it’s hard to beat the joy that this Advent calendar brings:

Yes, it gets dark earlier in the evening, but that means I sometimes get to see a sunset before I leave campus.

Maths... If you make $100,000 a year (not bad), it will take you 10 MILLION years to earn a trillion dollars. If you make a million dollars a year (wow!), it'll still take you a million years to earn a trillion dollars. Tax the rich.

The Cornell AAUP chapter has consistently stated that any deal with the Trump administration would be strategically unwise and a betrayal of Cornell’s principles. This remains the case. At best, we can say that this deal could have been worse. Read our full statement here:

The take from @hannahnpbowman.com: “I hope Mamdani goes full La Guardia. After this is all over, there should be a mediocre airport named after him.”

California voters on Tuesday approved Proposition 50, the ballot measure to redraw the state’s congressional map in favor of Democrats. See how each county voted with live provisional results that are updated every 10 minutes: bit.ly/4oNtf80 📸 Jungho Kim

A sneak peek at the cover of next week’s issue, which celebrates Zohran Mamdani’s historic win. #NewYorkerCovers https://newyorkermag.visitlink.me/451hFM

Don't forget that Zohran Mamdani spent his entire campaign standing proudly beside the trans community. He went to trans rights rallies just to show support. He proudly waved trans rights flags without hesitation. He refused to back down in support of trans rights. That makes me happy.

this is for all the brown muslims who dealt with the awful aftermath of 9/11 like holy shit. this is incredible.

Among many other things, I am so SO happy that after all the Islamophobic shit Cuomo et al threw at him, that Mamdani will be the first Muslim mayor of NYC.

Teen Vogue has become a top-tier political journalism authority and doing this the day before election day is just cruel.

Not much point in following @teenvogue.com anymore I guess.

Look folks gen AI videos are out in the wild so if you weren't already being careful about sharing rage bait videos then now is a great time to start If you can't trace a video back to a trusted source then I recommend leaving it where it is, like a slice of bologna you found on the street

Went on Mastodon long enough to see Jim Propp call out this New Yorker article, which takes a break from examining the resource consumption of generative AI to complain about matrix multiplication: www.newyorker.com/magazine/202...

ok what's everyone's favorite fact about the symmetric group

Don’t forget to destroy your clocks tonight and reclaim what they’ve taken from you

Finally saw this show in person. I love it so much.

“November” from Labours of the Months section of the Très Riches Heures, one of the most important illuminated manuscripts of the 15th century. A rather majestic farmer is shown presiding over his sounder of swine feeding from the autumn acorns publicdomainreview.org/collection/l...

My Halloween costume is “math.” With bonus Klein bottle earrings from @thalesdisciple.bsky.social!

Putting people in cages instead of feeding them is a policy choice

I’m giving a test on Friday, not just a quiz, and while I don’t have time to make the questions spooky, I will definitely sprinkle in some $\mathghost$s. Thanks @motivickyle.bsky.social!

43 years ago today, readers the world over opened their newspapers and gazed upon cow tools for the first time. happy birthday cow tools. you look great.

“Give your child a bedtime routine to help her fall asleep.” Ok but what if she decides her routine includes singing Baby Shark for two hours in the dark.

I have a ticket to see Hadestown on Saturday!

∫∫∫ INTEGRAL DAY ∫∫∫ The integral symbol is 350 years old! On October 29th, 1675 Leibniz has written down the first ever integral sign (see the image). Let's celebrate integral day by sharing your favourite integral or integral related fact / content.

I would add one to my age.

This is for @histoftech.bsky.social

Notice how quickly “we want our nation to uphold Christian values” turns into “it’s not the government’s job to feed the hungry or help the poor!” which are actually things Christ taught his followers to value.

As someone who has successfully evaded capture in the board game Mister X, I feel I could have made a better choice than this.

Arbitrarily Close: An Introduction to Real Analysis has been published by 619 Wreath! Free PDF, Desmos, and GeoGebra available on my faculty webpage (at least for the time being): www.cpp.edu/faculty/jaro... Hardcover and paperback copies are available from 619 Wreath: www.619wreath.com/acl.html

I made a RSS feed that to see when new sequences are posted to the On-Line Encyclopedia of Integer Sequences (OEIS). For example, if you want to see all of my new sequences or all those with keyword "nice", subscribe to api.peterkagey.com/oeis_feed.xm... api.peterkagey.com/oeis_feed.xm...

Analysis students love it when we start talking about the $\ell^\infty$ sequence space and they have to work with statements like “the limit of a convergent sequence of convergent sequences is convergent.”

I've lived in Alabama all but one year of my life. As a fervent Christian, and regardless, a decent human being, I am ashamed of the cruelty my state committed today.

I am recruiting for doctoral students at the University of California, Santa Barbara. Particularly those focused on the intersections between math ed and disability studies here, but also either field. Classes for the first three years are in person. My email: [email protected] #ITeachMath #EduSky

Imagine a browser where you type in “Taylor Swift” and it doesn’t even admit that her website exists. I write about Atlas, ChatGPT’s new anti-web browser that should come with a warning label. www.anildash.com/2025/10/22/a...

My friend told me that her 14 year old son started doing laundry on Sundays for some of his elderly neighbors. He doesn't charge for the labor. And now he is the most popular person in the building and has non stop pies, cookies, and cake. The 14 year old should be our model of modern masculinity.

Very beautiful. Does anyone know if "billiards in a gravitational field" is ergodic?

nooooo don’t become an oddly good demonstration of an ideal gas / the fundamental assumption of statistical mechanics noooo

This person is one hundred percent correct and it’s scary af. We will never “media literacy” our way out of this as a society. We are about to reap the whirlwind when it comes to misinformation, disinformation, and informational warfare.

At this year’s faculty conference (several weeks ago now), the theme was “Human-Centered AI.” And, I get it—“AI” is a broad term that includes lots of transformative, largely positive technologies. But when I asked one speaker, who talked about ethics, how to deal with AI-generated misinformation…

At least 47’s term of office is almost over. <putting hand to earpiece> Hold on, I’m getting a report…

A statement from the fine arts faculty at my college in response to the recent censorship at our museum by the university administration: pepperdine-graphic.com/fine-arts-di...

Every morning, Every day, Every evening, Calling me away

Tomorrow's the last day to get the "early bird" registration price for the Gathering 4 Gardner conference. This time, it will be in San Francisco! Featured speakers include computer scientist Donald Knuth, Mythbuster's Adam Savage, and Pixar's Danielle Feinberg. www.gathering4gardner.org/g4g16-info/

I personally am enjoying this experiment in having everything run by people who refuse to learn anything about anything.