Owen Biesel

Owen Biesel

@owenbiesel.bsky.social

Math prof, dad, gardener, knitter, bike rider, community member, friendly introvert. he/him/his and e/em/eir Also on mastodon as @owenbiesel@mathstodon.xyz

764 followers623 following715 posts

Owen Biesel reposted

Replying to @astrokatie.com

Made this last year and put it in the middle of the road on our street - at the bottom of a hill that intersects with a quiet street (with above avg. volume of kids). Drivers are weirded out by what is making the flashing light in the middle of the road and slow down. The light is a bike headlight.

Owen Biesel reposted

I just analyzed 1.9M recipes and can now report that the yummy simplicial complex is arguably *not* flag. The following flavor trios have far fewer recipes containing all three ingredients than the recipes with pairs of ingredients would predict.

ꭓle Ormsby 𓆙@e-infinity.space

An open problem in culinary mathematics: Consider the 𝑦𝑢𝑚𝑚𝑦 𝑠𝑖𝑚𝑝𝑙𝑖𝑐𝑖𝑎𝑙 𝑐𝑜𝑚𝑝𝑙𝑒𝑥 Y on vertex set I = {ingredients} where σ∈Y iff the ingredients in σ appear in a single good recipe. Question: Is Y a flag simplicial complex? (A complex Y is 𝑓𝑙𝑎𝑔 when σ∈Y iff {x,y}∈Y for all x,y∈σ.)

Owen Biesel reposted

Can we stop calling them "prediction markets" and call them what they are, which is betting/gambling platforms? My teeth itch every time someone says they're "trading" on one of those things. Betting. What you're doing is called betting or gambling, Kevin.

Owen Biesel reposted

I really think everyone needs to pay attention to this coordinated campaign to delegitimize Muslim Americans - not just as citizens but as humans. These increasingly hysterical attacks are a prelude to Republicans bringing us to a very, very dark place after the election.

The Bulwark@thebulwark.com

RFK: "There's five hundred million Arabs in the world. And yet they don't produce science. They don't win the Nobel Prize. They don't win the Fields Prize. They don't win the Wolf Prize. They don't produce literature."

Owen Biesel reposted

In a discourse that is so eaten up by the binary of "we can't draw lines because it hurts the broader effort" on one side, and "we can't draw lines because who are you to say we draw it here and not there" on the other, there's a lot of care and clarity (not to mention bravery) in this piece.

Erin Reed@erininthemorning.com

The elections are on next Tuesday, and so much is at stake, including the soul of the Democratic Party when it comes to transgender people. I am asking you to leave a very small number of races blank in which a Democrat has embraced extreme anti-trans hate. I make my case here.

Owen Biesel reposted

Replying to @tomflood.bsky.social

And the freaking greatest thing I have ever seen: this intersection has a traffic signal that is set by DEFAULT for pedestrians and cyclists, cars have to activate to cross. 🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥🔥

Owen Biesel reposted

Replying to @franzanth.bsky.social

no but seriously you all gotta watch the trailer

Jen C Mars@jencmars.bsky.social

how dare a release trailer for an aquarium sim make me cry

Owen Biesel reposted

The elections are on next Tuesday, and so much is at stake, including the soul of the Democratic Party when it comes to transgender people. I am asking you to leave a very small number of races blank in which a Democrat has embraced extreme anti-trans hate. I make my case here.

erininthemorning.comDon’t Vote For The Worst Anti-Trans DemocratsThe Democratic Party should, and likely will, win big in the midterms. We must not send the worst anti-trans voices to join them.

*Haven't thought that through.* Oh my word. Reposting with alt-text.

John Warner@biblioracle.bsky.social

This sort of AI assistant technology will only be destructive unless and until the people developing it can actually grapple with these sorts of questions because they are at the heart of everything. What is worth doing with this one life? www.nytimes.com/2026/10/25/s...

Owen Biesel reposted

Replying to @drew-lewis.com

I wish more people understood that every minute they spend engaging with AI slop papers is time they could instead spend reading a junior colleague's paper and offering feedback and guidance, or time they could spend with their students helping them see the joy and beauty of math.

Owen Biesel reposted

This whole thread up and down is FASCINATING about the politics of dissertation depositories (and databases more generally)

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Owen Biesel reposted

Kudos to NBC New York for saying it without equivocation: "The US is to blame for the world falling behind in the fight against climate change."

Owen Biesel reposted

Workers constantly dig up and relay brick sidewalks and streets in the Netherlands. Water pipe break? Laying fiberoptic cables? The same team opens and closes the and does the work. This team is smoothing out a street that got uneven after 20 years. "It's normal maintenance, just sand below."

Oh my word, I read the article and the secret password was indeed literally the number 4. "Astonishingly, the private keys were 4, 56, 66, 115, 155, 156, 230, 237."

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Using money that was set aside for needy families to instead build out the surveillance state is just... cartoonishly evil.

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Owen Biesel reposted

This morning the cargo bike dad yielded for me as I walked my kid to daycare. But the SUV driver behind him blew the stop sign and drove right at us. Spare me the “when will the bikers follow the law” shit.

Owen Biesel reposted

Replying to @erinmayequade.bsky.social

My 4 yr old daughter has an account, opened without our consent. The maximum amount of money any person can donate to my campaign is $1,000. The limit to what a corporation can donate to our daughter's account: none. Every corporation with business before the MN Legislature can now donate stocks...

Owen Biesel reposted

Read this article about the childrens' lives that have been forever changed by 3 minutes of terror. Then go down to your early voting site and vote out every politician who cares more about the gun industry than our kids. www.cnn.com/2026/10/17/u...

cnn.comIt took just 3 minutes. How the Bend school shooting unfolded | CNNA teen killed three children and a teacher in an Oregon elementary school before being shot by a bystander, police say. Follow for the latest on the investigation.

Owen Biesel reposted

As a Jewish evolutionary theorist against Israeli apartheid I can tell you in no uncertain terms that 1. There is no such thing as "biologically Polish or Russian", and 2. There is, in fact, an extremely important distinction between anti-Zionism and antisemitism.

Notorious VOG@notoriousvog.bsky.social

I RESPECT your point—BUT it doesn't matter what racists call you—biologically & legally, they're Polish & Russian. I REFUSE to entertain fake distinction between anti-Zionism & antisemitism ANYMORE, especially since 'antisemitism' has been completely weaponized to shield genocide. Name the truth!

Owen Biesel reposted

Replying to @ijlaba.bsky.social

This is a similar phenomena as MSM only looks at a handful of Ivies and elite institutions when discussing higher ed when the vast majority of students don't attend these schools or schools like them.

Owen Biesel reposted

I made this pattern a few weeks ago and forgot to post. I’m not sure what the name for this type of link is, but it’s kind of the opposite of a Brunnian link. Each component is linked with every other component and removing any component does not change this property.

Owen Biesel reposted

At thousands of No Kings events yesterday - including this one in Middletown, Connecticut - the people of this country made clear that in 16 days we are taking this country back from the would be autocrats and oligarchs. In America, the people still rule.

Owen Biesel reposted

Short thread asking @nytimes.com and other MSM to stop interviewing the same small handful of people every time something math-related comes up. Mathematicians are dismayed when AI scoops them on the results? How about look for advice from someone familiar with getting scooped and outpowered.

The New York Times@nytimes.com

Terence Tao is typically described as one of the world’s greatest living mathematicians. He is on the front lines of a debate about artificial intelligence and the future of his field.

This is me, for example! All of my awesome colleagues fall into this category!

Izabella Laba 🇨🇦@ijlaba.bsky.social

Talk to someone at a small non-flagship state university, with a 3-3 or 4-4 teaching load, who still - somehow - maintains a research program. They are grossly outpowered by R1 professors with large grants and low teaching load. And yet, they manage.

Owen Biesel reposted

The real trolley problem is that we don’t sufficiently fund public transit. Give it the money it needs so we can serve and / or kill the general public!

Owen Biesel reposted

I love the WITCHES VOTE banner.

Greg Pak@gregpak.net

#NoKings Vote Early parade in Bay Ridge with @bkindivisible.bsky.social and the @brassqueensnyc.bsky.social ! Vibes: impeccable! Vote early, friends! nokings.org

That link doesn't work for me, but this one does: publicdomainreview.org/collection/s...

publicdomainreview.org*Snowflakes: A Chapter From the Book of Nature* (1863)A collection of poems, extracts, anecdotes and reflections on the theme of snow and the snowflake, in addition to a series of wonderful illustrations of ice crystals.
The Public Domain Review@publicdomainrev.bsky.social

Illustrations of snow crystals as "actually observed and sketched with the aid of the microscope”, from the 1863 book Snowflakes: a Chapter from the Book of Nature — https://publicdomainreview.org/collections/illustrations-of-snowflakes-1863/

Owen Biesel reposted

NEW YORK, N.Y. - October 17, 2026: Demonstrators rallied on the steps of the James A. Farley Post Office Building in Manhattan on Saturday in coordination with 'No Kings' gatherings held around the country. Organizers called on the U.S. Postal Service to deliver all mail-in ballots.

Owen Biesel reposted

A ballot measure in Virginia this fall would make it the 26th state to allow anyone who is not presently in prison to vote. “This is a moment that’s been a long time coming,” says an advocate who has fought to expand rights restoration.

boltsmag.org“It’s Time”: Virginians Will Decide Whether to Repeal Jim Crow-Era Lifetime Ban on Voting - BoltsVirginia lawmakers set up a November referendum asking voters to end the state’s uniquely harsh felony disenfranchisement rules.

Owen Biesel reposted

one thing I'm gonna say is: more horn sections and drumlines at protests please.

Greg Pak@gregpak.net

#NoKings Vote Early parade in Bay Ridge with @bkindivisible.bsky.social and the @brassqueensnyc.bsky.social ! Vibes: impeccable! Vote early, friends! nokings.org

Owen Biesel reposted

Hard agree. If you haven’t heard of it, it’s because Meta sued the author and got a gag order that prevents her from saying a single word about her own book. Mark Zuckerberg is a threat to human rights and democracies the world over, including ours. It is vitally important you know how and why.

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