Rochelle
@uberwensch.bsky.social
📤 1433
📥 453
📝 7231
like if Just Some Guy was a girl
pinned post!
What is entanglement? Itamar Pittowsky claimed that these results brought us right to the precipice of logical contradiction--but not over. Abner Shimoney described it as a piece of "experimental metaphysics." I'm a nobody, but I think entanglement is the most interesting thing ever discovered. 🧵⚛️
11 months ago
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so we can derive the various equations of relativistic quantum physics by studying the irreps of the Poincare group. Can we derive the Schroedinger equation from rep theory of the Galilea group?
1 day ago
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so is string theory UV complete? i have been told that the 'string tension' imposes energy costs on short-diameter worldsheets that regularizes the sum. however, how can there be a lorentz-invariant notion of 'short'?
2 days ago
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Why was π afraid of θ? Because θηζ.
3 days ago
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paying them money so they can publish their blood libel about me 🤪
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3 days ago
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Rochelle
Arnaud Spiwack
4 days ago
A cursory look tells me that
@3blue1brown.com
didn't publish the source for this video's animation. However
@uberwensch.bsky.social
's question and its variants can be answered with this website
mathvisuals.org/PrintGallery/
that I found in the video's description.
loading . . .
Math Visuals
https://mathvisuals.org/PrintGallery/
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I've said this many times before. The crucial point is actually to understand why 0.99999... refers at all. Before that conversation, an algebraic proof is actually obfuscatory. As a diagnostic, ask yourself: does ...99999 = x = -1? After all, x - 10x = 9.
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4 days ago
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This is a great story
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4 days ago
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In this line bundle generalization, what is the momentum operator? You have to pick a connection, I suppose? How do you choose this? Does it matter?
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6 days ago
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> "emerging field" i am going to scream
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7 days ago
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I remember being very excited to read (in Zee's "QFT in a Nutshell) a good reason that 1+2+3+4...= -1/12 occurs in the Casimir effect. The sum of naturals only occurs in the first place due to untenable idealization, essentially to the effect that the plates are perfect at confining any wavelength.
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7 days ago
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reposted by
Rochelle
Jun
27 days ago
It's literally a metal snail. There is iron growing from their skin.
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Alright listen up. I need all of my mathematician (or non-mathematician) followers (or non-followers) to post a pic of yourself drinking coffee (or not doing that) and yet us know what you've been working (or slacking) on lately.
#MathCoffeeSelfie
7 days ago
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Rochelle
princesscore
8 days ago
fascism violently maintains a void where the understanding of trans bodies should be. the nazis destroyed research on trans healthcare just as trump is doing now. fascists maintain an epistemic void in the domain of trans bodies, which they can fill with any lie they want without fear of opposition
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It is extremely important that you do not subscribe to or work with the New York Times. They are materially responsible for the rise of fascism in the US and their clear intention is to legitimize trans genocide.
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9 days ago
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Rochelle
Gro-Tsen
13 days ago
🔽 So,
@jeanas.bsky.social
and I are please to announce a new preprint in computability, in which we show that the Turing degrees can be embedded upside down in (what we call) the “Arthur-Nimue-Merlin degrees”. The paper opens with a riddle, which I hope will be of interest!
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Rochelle
okay Kelly
12 days ago
You want me to "lock" in? The thing that heed martin?
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Rochelle
the strongest evidence of simulation hypothesis, imo, is that sometimes, when I'm alone, instead of picking something up, I'll say "I don't need that right now."
11 months ago
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all models are true (but some are useless)
12 days ago
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do you ever start feeling competent and/or intelligent
12 days ago
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Rochelle
Greg Egan
12 days ago
This image (from
www.gregegan.net/SCIENCE/Elli...
) sums up for me (roughly, intuitively) why there is SO(4) symmetry for orbits: the two equal-sized vectors A and B can be rotated *independently* while preserving the semi-major axis, and hence the energy, of a Kepler orbit. And so(3)+so(3) = so(4).
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how symmetrical is orbital mechanics? well, the orbit can have any orientation in 3d space, so the answer is obviously SO(4). wait... what?
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13 days ago
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time for the
#MathCoffeeSelfie
i desperately must know what you have been up to
14 days ago
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This was an extremely good talk! Amusingly, Wayne (briefly) discusses Maxwell's mechanical model of the EM field which I was just this week introduced to:
bsky.app/profile/john...
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15 days ago
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Rochelle
surrogate corpse
16 days ago
since i have more cis followers now, as more academics have started following me here, it is right to be explicit: the word for what is happening now, in the united states, is genocide
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I'd like to do this again, cause I don't think I absorbed it last time. What exactly is the difference between supposing that 1) the EM field occupies all of space & undulates, vs 2) supposing that the luminiferous aether does?
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20 days ago
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It is time for this week's
#MathCoffeeSelfie
. Please follow the usual protocol.
21 days ago
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Rochelle
okay Kelly
22 days ago
awoke from uneasy sleep to find myself transformed into a feature not a bug
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Ah yes, the symmetry group of a square, Maps(□ --> □)
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23 days ago
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Every single moment that a driver is driving they are brandishing a weapon, and they need to act like it.
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23 days ago
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gotta convince this barista to marry me using nothing but my coffee order
23 days ago
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idk I'm hot
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24 days ago
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reposted by
Rochelle
the many-worlds interpretation is like "what if you were faced with the sleeping beauty problem thousands or millions of times every second?"
11 months ago
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you might not believe it, but i am actually even more annoying in person
27 days ago
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it is my solemn duty to one-box so that the real me outside of Omega's simulation gets a million bux
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27 days ago
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anyway there's a huge literature on this stuff. i should just read it. but my secret point in the background is that, true or false, MWI is absolutely not immediate.
add a skeleton here at some point
27 days ago
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Then there is the question of what it is supposed to mean that Born rule is 'reinforcing' in some sense. I agree that if you have a branching tree, describing the outcome-sequences of some iterated experiment, and if you concede to put Born probabilities p(A) on the edges, and
add a skeleton here at some point
27 days ago
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Never mind. The arguments given the other day are extremely weak, and moreover profoundly confused as to what is the burden, and what it would look like to meet it.
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27 days ago
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Rochelle
Kaia Vintr
29 days ago
when people go to the gym they shouldn't use weights and machines. They should practice lifting real-world objects that they might need to lift or carry in the future
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its so cool to be enthused about one's work
30 days ago
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Rochelle
Hourly Cosmos
about 1 month ago
Saturn-W00066629-Feb-25-RAW - From Ian Regan -
https://flic.kr/p/9qzyuV
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i wonder if the anti-abortion protestors on campus are put up to it by panda express because when i see their imagery i get hungry for sweet and sour pork
about 1 month ago
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Rochelle
Those of the marble are the Elect; those others are destined for utter destruction. (All to the glory of god, ofc.)
about 1 month ago
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I remember the first time I saw Saturn through a telescope. It's really out there. Incredible.
add a skeleton here at some point
about 1 month ago
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Lead you through the Scary Door
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about 1 month ago
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Rochelle
me, exasperated, mustard on my face, trying to explain adjunctions to a colleague: you see, if someone Forgets their lunch, it can be regarded, naturally, as Free
about 1 year ago
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NEED some pals to do Bourbaki but for physics
about 1 month ago
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in the case of degenerate vacua, which VeV does the path-integral compute?
about 1 month ago
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add a skeleton here at some point
about 1 month ago
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every time i have ever kicked myself for struggling with something or for being desperately confused, it has turned out that the subject was a wide-open research program or a hostly-contested philosophical debate
about 1 month ago
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Rochelle
Aria Winningson
about 1 month ago
explaining to journalists that trans people have a thing called "being alive" which is as important to us as "have opinion in newspaper" is to them
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