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ꭓle Ormsby 𓆙

@e-infinity.space
1.7K followers 645 following 6.3K posts

Numbers and shapes at Reed College. Mathematician, parent, spouse, runner, 𝔣𝔯𝔞𝔨𝔱𝔲𝔯 enthusiast. He or they.

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ꭓle Ormsby 𓆙 @e-infinity.space · 2h
Got flu and covid vax yesterday and now have the distinct pleasure of feeling like shit and experiencing dysgeusia, a rare side effect in which my mouth tastes like metal. (Worth it, obv.)
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ꭓle Ormsby 𓆙 @e-infinity.space · 3h
Differentiating sine and cosine today in calculus. Should take about 30 seconds. 🧮
Graphic showing how the velocity vector of (cos t, sin t) is (-sin t, cos t).
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Clément Canonne @ccanonne.github.io · 20h
A very important message from Omer Reingold to our TCS community, especially us (arg, already) senior researchers: "snap out of it." Please, digest, and share. theorydish.blog/2026/09/29/s...
As for depression: the next time you have the urge to lament, or even celebrate, being “the last generation of human mathematicians,” perhaps keep it to yourself. Contemplating the end of your profession from the relative comfort of an established, tenured career is a privilege, and it comes with responsibilities. Senior academics are not merely individual researchers; we are stewards of our field, and we owe our junior colleagues active leadership rather than abandonment.
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David @yonderdavid.bsky.social · 29/09/2026
I'm not supposed to tell you this but if you pass your defense they show you the easy solutions to the Millennium Prize Problems.
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ꭓle Ormsby 𓆙 @e-infinity.space · 15h
help i am being assaulted with snuggles
Dogpile
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julia 🌋 @hypv.bsky.social · 29/09/2026
cohomology is a kind af counting
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ꭓle Ormsby 𓆙 @e-infinity.space · 29/09/2026
topology ∩ archaeology #MathSky
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Daniel Litt @littmath.bsky.social · 28/09/2026
that the mathematical literature as a whole is so reliable comes down to the fact that, over time, we have made an even number of sign errors
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ꭓle Ormsby 𓆙 @e-infinity.space · 27/09/2026
Proof that lasagna is not a sandwich:
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ꭓle Ormsby 𓆙 @e-infinity.space · 27/09/2026
i am livid
Connections puzzle with CARRIER, HOMING, STOOL, CLAY highlighted — add pigeon to the end! But it doesn't count.
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ꭓle Ormsby 𓆙 @e-infinity.space · 26/09/2026
Learning from the Olde ones.
I am doing my job. I intend this year to have my 97th nervous breakdown in full view. I intend to make it the most excruciating educational experience available, because the college is paying my salary, thus providing also the context in which I will have a nervous breakdown. They are telling me that I am hired as a teacher because I know something and that I am to direct conferences in which students can discuss their innermost truths. I am working very hard at that.
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emilyriehl.bsky.social @emilyriehl.bsky.social · 25/09/2026
I was part of a group that met last week to try to propose recommended changes to the structure of math PhD programs in an age of AI. Our report, together with a collection of related resources, is now available here: cmsa.fas.harvard.edu/aimathphd_su...
cmsa.fas.harvard.edu
Summit on PhD Math Education in the Age of AI - CMSA
On September 17–18, 2026 a group of 24 mathematicians met at Harvard to grapple with the changing landscape for mathematics PhD programs in the age of AI. We produced recommendations given […]
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ꭓle Ormsby 𓆙 @e-infinity.space · 26/09/2026
Now with the partition lattice Πₙ and poset of integer partitions Πₙ/𝔖ₙ as well! e-infinity.space/partition-la...
partition lattice of a set with 4 elementsorbits under S_4 -- now they're integer partitions visualized as Young diagrams
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ꭓle Ormsby 𓆙 @e-infinity.space · 26/09/2026
One like and I buy the mystery ceramic bug for $15. 🐛🐞🪲🦋
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noam @noamchompers.bsky.social · 25/09/2026
Read this during undergrad and can still quote it from memory lol
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ꭓle Ormsby 𓆙 @e-infinity.space · 26/09/2026
If we’re in the Singularity, how come I can’t get the office printer to work reliably? Checkmate, clankers.
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ꭓle Ormsby 𓆙 @e-infinity.space · 26/09/2026
Route to future recreation in the forbidden region.
figure labeled COMPLEX VELOCITY SPACE

The plane shows a 'physical region' on the horizontal axis with hatch marks between -c and +c (speed of light).

On the positive axis, a dark line moves towards +c, hops over it, and then swirls around in a calligraphic flourish. The flourish has an arrow pointing downwards with text below reading "Rout to future recreation in the forbidden region."
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ꭓle Ormsby 𓆙 @e-infinity.space · 26/09/2026
Just discovered Nick Wheeler's handwritten lecture notes in Reed's digital archives. Who wants to learn special relativity? rdc.reed.edu/record/22856...
title page
Elements of Special Relativity
being a selection from some lectures on
THE CLASSICAL THEORY OF FIELDS
by
Nicholas A. Wheeler
Reed College
Fall~1966algebraic theory of g-antisymmetric matricesDr. Zago checking the inertiality of his laboratorycomplex velocity space
physical region on left
route to future recreation in the forbidden region
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ꭓle Ormsby 𓆙 @e-infinity.space · 26/09/2026
Kiddo’s 4th grade class started typing practice. He reports a current rate of two words per minute.
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ꭓle Ormsby 𓆙 @e-infinity.space · 26/09/2026
𝑃𝑠𝑠𝑠𝑠𝑡. Hey, kid. You wanna see some Hasse diagrams? e-infinity.space/viz/hasse-di... 🧮
finite topological spaces on 5 points up to homeomorphism, ordered by refinementTamari lattice of planar full binary treesnecklaces with 9 beads and two colors
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Congresswoman Maxine Dexter, M.D. @repdexteror.bsky.social · 25/09/2026
In case you missed it, I just introduced a bill to help protect our wildland firefighters. Watch for the 60-second rundown.
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Zeno Rogue @zenorogue.bsky.social · 25/09/2026
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ꭓle Ormsby 𓆙 @e-infinity.space · 25/09/2026
Petition to cancel Thanksgiving and replace it with a holiday on November 23 called Pingala-Fibonacci Day on which everyone gathers at 5:08 and each guest's plate is required to hold the sum of the previous two guests' plates.
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ꭓle Ormsby 𓆙 @e-infinity.space · 25/09/2026
My most mystical belief is that knowledge is neither a tower nor a raft, but rather an ever-evolving fractal foam that might be dense in some regions but is never complete.
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ꭓle Ormsby 𓆙 @e-infinity.space · 25/09/2026
Haversine? But she hasn't even read the Terms & Conditions yet!
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Matt Salomone @matthematics.com · 24/09/2026
A slide from a 2012 talk I gave on quant reasoning and writing, my sneaky way of teaching mixed company what a commutative diagram is Also that plenty of folks travel the "informal reasoning" solution path in their everyday lives who say they're "bad at math" bc they don't take the long way round
"Problem-solving pathways", with a square whose vertices are labeled (clockwise from top left) Story Problem -- Reading --> Symbolic Problem -- Formal Reasoning --> Abstract Solution -- Writing --> Contextual Solution, and a fourth arrow from Story Problem -- Informal Reasoning --> Contextual Solution
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ꭓle Ormsby 𓆙 @e-infinity.space · 25/09/2026
Today's math talk with kiddo was incredibly gratifying: ﹡If a computer counts to one billion in one second and has been counting since the start of the universe, then it would currently be at about 4.4e26. 1/2
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ꭓle Ormsby 𓆙 @e-infinity.space · 24/09/2026
Oliver decided to join in my spouse’s active meditation this morning.[Audio on.]
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Sean Laverty @seanteachesmath.bsky.social · 24/09/2026
OER is HIP.
OER is a High-Impact
Practice (HIP)
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ꭓle Ormsby 𓆙 @e-infinity.space · 24/09/2026
Well, just recommended a yearlong ban for someone due to a math.KT AI slop submission. Don't do that, kids.
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ꭓle Ormsby 𓆙 @e-infinity.space · 24/09/2026
Peter Scholze in the Princeton AT seminar (online) just now: "This makes me strongly believe that the continuum hypothesis is false." (In reference to recent work suggesting that reflexivity of condensed vector spaces is (a) independent of ZFC and (b) false if 2^ℵ₀ = ℵₙ for some n<∞.)
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Gautam Kamath @gautamkamath.com · 23/09/2026
NYU Courant professor Tristan Buckmaster, of Navier-Stokes drama fame, gave a talk at the new NYU Mathematics in the Age of AI seminar series. It was... popular.
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ꭓle Ormsby 𓆙 @e-infinity.space · 24/09/2026
The algebra of Boole was not Boolean algebra! It was the algebra of signed multisets (instead of the algebra of sets). 🙃 link.springer.com/chapter/10.1...
link.springer.com
Boole’s Algebra Isn’t Boolean Algebra
To Boole and his mid-nineteenth century contemporaries, the title of this article would have been very puzzling. For Boole&#8217;s first work in logic, The Mathematical Analysis of Logic, appeared in ...
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arXiv @arxiv.bsky.social · 23/09/2026
arXiv has received a 17.2 million investment from three leading philanthropic organizations. Thank you to Simons Foundation International, Siegel Family Endowment, and XTX Markets for your support of arXiv! Read more: blog.arxiv.org/2026/09/23/arxiv-receives-multiyear-investment/
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ꭓle Ormsby 𓆙 @e-infinity.space · 23/09/2026
A Reed student needs to write a thesis on why we call this the Canyon.
Reed Canyon with thin textured clouds and the first hint of autumn color in the trees.
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ꭓle Ormsby 𓆙 @e-infinity.space · 23/09/2026
These groups were made for acting, and they’ll act all over you.
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ꭓle Ormsby 𓆙 @e-infinity.space · 23/09/2026
These ads for alternative early childhood education in Portland are getting weird.
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ꭓle Ormsby 𓆙 @e-infinity.space · 23/09/2026
Check 1001 from "Society of Young Women Scientist [sic] and Engineers LLC" for $150k to a Susan Collins super PAC is a helluva way to bribe a Senator, especially when paired with gleeful emails to the head of the super PAC describing the scheme.
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ꭓle Ormsby 𓆙 @e-infinity.space · 23/09/2026
jfbaer.github.io/fun.html 🧮
jfbaer.github.io
Steenrod art | Jake Francis Baer
A library of indecomposable modules over the 2-primary Steenrod algebra.
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ꭓle Ormsby 𓆙 @e-infinity.space · 23/09/2026
as a cynical elder millennial i'm required to say "lmao even" but deep down i know this is very true
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Emma R. Hasson @dodecalemma.bsky.social · 23/09/2026
🔥🔥🔥 Chaim Goodman-Strauss will be speaking further on this at the NYC Math Ed/Comm seminar on Oct. 6! 🔥🔥🔥 #mathsky
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ꭓle Ormsby 𓆙 @e-infinity.space · 22/09/2026
Bluesky rite of passage achieved: I received an earnest, didactic response from a stranger to a joke post.
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ꭓle Ormsby 𓆙 @e-infinity.space · 22/09/2026
Who wants to help me design a mathematical card deck with suits ∂, ∫, Ω, and Σ? The royalty denominations will be replaced with King = Euler, Queen = Noether, and Jack = Galois. The Ace is Hilbert and the Joker is Bourbaki.
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ꭓle Ormsby 𓆙 @e-infinity.space · 22/09/2026
Right now my family has two PhDs and a JD trying and failing to get a prescription filled + bloodwork ordered, and we have 'excellent' insurance. Great healthcare system.
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ꭓle Ormsby 𓆙 @e-infinity.space · 22/09/2026
Why do we pack eggs like ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ when we could pack them like ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ or ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ⬤ ?
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ꭓle Ormsby 𓆙 @e-infinity.space · 22/09/2026
Chaim is bringing the fire 🔥
Abstract
We provide a clearer presentation of the Chair44 monotile, a new strongly aperiodic
monotile in three-dimensional Euclidean space E3
.
With LLM tools (ChatGPT Astra), Ioannis Tsiokos recently reported the first
known strongly aperiodic monotile in three-dimensional Euclidean space E
3
, the Chair44
monotile (see Figure 3, taken from Tsiokos’ preprint [11]). Hats off to Tsiokos for this
discovery, the framework he developed, and the human inquiry that led to the Chair44
monotile.
However, the paper itself and the formalization that it claims for support are not
in a form that is readily usable to anyone who wants to understand or check it. This is
not just because of the needless length or complexity of the argument (which is indeed
overwhelming as presented), or because the formal repository is not in normal form, or
because much of the text is misleading or poorly organized, but mainly because there
is so much irrelevant puff to push through. These are hallmarks of an LLM-driven
research paper.
We must, absolutely, insist on a higher standard for scientific discourse. The aim
must be to communicate, clearly, with people in the community — certainly this is an
historical requirement for publication.1
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depths of wikipedia @depthsofwikipedia.bsky.social · 21/09/2026
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ꭓle Ormsby 𓆙 @e-infinity.space · 20/09/2026
Let's do this. e-infinity.space/putnam/
PUT
NAM
e-infinity.space/putnam/
thu 9:10 / fri 13:40 in Lib 389
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Cubes_Art @cubesart.bsky.social · 18/09/2026
You mean a dystopian wasteland piled with garbage from which humans escape via a monopolistic company’s life raft spaceship that doesn’t actually have a feasible plan, but instead turns out to be a conspiracy to pacify people until they stop asking questions? I think they are building that.
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ꭓle Ormsby 𓆙 @e-infinity.space · 19/09/2026
Omelas is Salem, O backwards.
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