χle Ormsby
@motivickyle.bsky.social
Numbers and shapes at Reed College. Mathematician, parent, spouse, runner, 𝔣𝔯𝔞𝔨𝔱𝔲𝔯 enthusiast. He or they.
Are cats truly unique in their obsession with sitting in boxes? If you had access to box of sufficient size, wouldn't you want to sit in it?
November 26, 2025 at 2:02 PM
Are cats truly unique in their obsession with sitting in boxes? If you had access to box of sufficient size, wouldn't you want to sit in it?
Yeah, s*x is great, it's the first squarefree composite and smallest perfect number.
November 26, 2025 at 12:41 PM
Yeah, s*x is great, it's the first squarefree composite and smallest perfect number.
Reposted by χle Ormsby
[me after being inexplicably granted access to the hyperuranion]
me: wow, so this is the so-called "Platonic realm"!
perfect circle:
perfect square:
me: lmao do y'all ever call it the "Friend Zone"???
me: wow, so this is the so-called "Platonic realm"!
perfect circle:
perfect square:
me: lmao do y'all ever call it the "Friend Zone"???
November 25, 2025 at 11:30 PM
[me after being inexplicably granted access to the hyperuranion]
me: wow, so this is the so-called "Platonic realm"!
perfect circle:
perfect square:
me: lmao do y'all ever call it the "Friend Zone"???
me: wow, so this is the so-called "Platonic realm"!
perfect circle:
perfect square:
me: lmao do y'all ever call it the "Friend Zone"???
Proposing an off-campus study program in which I take students to the Platonic Realm and we observe the Forms in their natural habitat.
November 25, 2025 at 11:23 PM
Proposing an off-campus study program in which I take students to the Platonic Realm and we observe the Forms in their natural habitat.
Ronly Honly Bing!
![R. H. Bing (October 20, 1914 – April 28, 1986)[1] was an American mathematician who worked mainly in the areas of geometric topology and continuum theory.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cyyd366g3hrxp5rynixm2mm3/bafkreid62wy3dekb2kzbisjfdlimlb35j4rlgew5iof7vi32byfszmg26a@jpeg)
![Bing's father was named Rupert Henry, but Bing's mother thought that "Rupert Henry" was too British for Texas. Thus she compromised by abbreviating it to R. H.[5] Consequently, R. H. does not stand for a first or middle name.
When Bing was applying for a visa, he was requested not to use initials. He explained that his name was really "R-only H-only Bing", and ended up receiving a visa made out to "Ronly Honly Bing".](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cyyd366g3hrxp5rynixm2mm3/bafkreigmfj53q4uy33spga2bxdkllqm3ag5sffovg5g7ddmu3vqzkb6k24@jpeg)
November 25, 2025 at 6:31 AM
Ronly Honly Bing!
Ed Frenkel is explicitly banned from this bookstore.
November 25, 2025 at 3:39 AM
Ed Frenkel is explicitly banned from this bookstore.
Spouse logged into Gmail on my phone and I about had a heart attack when I looked at my home screen.
November 25, 2025 at 3:28 AM
Spouse logged into Gmail on my phone and I about had a heart attack when I looked at my home screen.
I’m sure it’s completely normal to convince your grandma to give you your dad’s baby teeth and then incorporate them into a knife-wielding doll.
November 25, 2025 at 12:36 AM
I’m sure it’s completely normal to convince your grandma to give you your dad’s baby teeth and then incorporate them into a knife-wielding doll.
Am I the only one brave enough to admit that _all_ of Star Wars sucks except for the part in TCW where they resurrected Darth Maul with spider legs? That shit was sick.
November 24, 2025 at 9:42 PM
Am I the only one brave enough to admit that _all_ of Star Wars sucks except for the part in TCW where they resurrected Darth Maul with spider legs? That shit was sick.
On the one hand, I'm glad the college math preparation crisis is breaking out into broader discussion. On the other, that Atlantic article annoys the crap out of me.
November 24, 2025 at 5:34 PM
On the one hand, I'm glad the college math preparation crisis is breaking out into broader discussion. On the other, that Atlantic article annoys the crap out of me.
Unbelievably cool that I can now go out for an easy 5k run with this kid.
November 24, 2025 at 1:03 AM
Unbelievably cool that I can now go out for an easy 5k run with this kid.
Goth plates, cool rocks, and freak show taxidermy at the Radical Harvest Craft Fair, SE Division and 35th Pl right now.
November 23, 2025 at 8:42 PM
Goth plates, cool rocks, and freak show taxidermy at the Radical Harvest Craft Fair, SE Division and 35th Pl right now.
Reposted by χle Ormsby
Made this 2-sided this morning and realized that playing with the crossings generates two different mathematical links: One is L6n1 (which is apparently three fibers in the Hopf Fibration?) and the other is Borromean rings (L6a4). Urls for their katlas pages in the alt text.
November 23, 2025 at 6:04 PM
Made this 2-sided this morning and realized that playing with the crossings generates two different mathematical links: One is L6n1 (which is apparently three fibers in the Hopf Fibration?) and the other is Borromean rings (L6a4). Urls for their katlas pages in the alt text.
Watched Aronofsky's Noah last night (which is quite good! — loved how he embellished the fable, and the montages were moving-if-hokey) and then went down a deep rabbit hole of previews for movies in the "Faith and Spirituality" category.
November 23, 2025 at 4:33 PM
Watched Aronofsky's Noah last night (which is quite good! — loved how he embellished the fable, and the montages were moving-if-hokey) and then went down a deep rabbit hole of previews for movies in the "Faith and Spirituality" category.
Carefully explaining to college administrators that in log-coordinates, the real points with coordinates between 0 and 1 of the variety given by ∏ᵢ₌₁⁴ xᵢ = R form a 3-simplex, and thus my algebraic topology training is uniquely suited to helping us achieve a 4-year graduation rate of R.
November 23, 2025 at 3:49 PM
Carefully explaining to college administrators that in log-coordinates, the real points with coordinates between 0 and 1 of the variety given by ∏ᵢ₌₁⁴ xᵢ = R form a 3-simplex, and thus my algebraic topology training is uniquely suited to helping us achieve a 4-year graduation rate of R.
Here are some nice mushrooms and moss.
November 23, 2025 at 12:26 AM
Here are some nice mushrooms and moss.
It turns out five minutes is enough minutes of scrolling today. Peace, y’all ✌️
November 22, 2025 at 6:21 PM
It turns out five minutes is enough minutes of scrolling today. Peace, y’all ✌️
Reposted by χle Ormsby
In case you aren't already aware of one of the nerdiest, nich-est online games: TeXnique, where the goal is to type LaTeX formulae as quickly as possible. texnique.xyz
It is "fun."
It is "fun."
November 21, 2025 at 9:14 PM
In case you aren't already aware of one of the nerdiest, nich-est online games: TeXnique, where the goal is to type LaTeX formulae as quickly as possible. texnique.xyz
It is "fun."
It is "fun."
Here's the paper, which begins by citing Book X of Plato's Republic: arxiv.org/abs/2511.15304
November 21, 2025 at 2:56 PM
Here's the paper, which begins by citing Book X of Plato's Republic: arxiv.org/abs/2511.15304
November 21, 2025 at 2:49 PM
Reposted by χle Ormsby
8675309 is prime, and so is 8675311, so if you ever need a middlin'-large pair of adjacent primes to test your cryptographic suite, all you need is a 1980s earworm and a +2 and you're all set.
Man, everything is so bleak, anyone got a fun fact or little bit of trivia they want to share
November 21, 2025 at 3:28 AM
8675309 is prime, and so is 8675311, so if you ever need a middlin'-large pair of adjacent primes to test your cryptographic suite, all you need is a 1980s earworm and a +2 and you're all set.
These new papers on the 'dga of planar loops' look very fun: arxiv.org/abs/2511.15653 🧮
November 21, 2025 at 3:58 AM
These new papers on the 'dga of planar loops' look very fun: arxiv.org/abs/2511.15653 🧮
Intermittent reminder that I have the best students.
November 21, 2025 at 1:45 AM
Intermittent reminder that I have the best students.
A thread on a number more odd than every odd integer: 1/2
November 20, 2025 at 11:01 PM
A thread on a number more odd than every odd integer: 1/2
Reposted by χle Ormsby
Discourse surrounding “AI” these days often feels like a guy showing you his shovel and you say, “that’s a nice shovel” and he says “I am going to perform surgery on my mother with this shovel” and you say “Oh God please don’t that is not what a shovel is for.”
November 19, 2025 at 9:06 PM
Discourse surrounding “AI” these days often feels like a guy showing you his shovel and you say, “that’s a nice shovel” and he says “I am going to perform surgery on my mother with this shovel” and you say “Oh God please don’t that is not what a shovel is for.”