Sign in

SunJester

@sun-jester.bsky.social
88 followers 84 following 385 posts

Likes math, science & art. Go eclecticism! No AI I also write a litte bit for short stories and poems: www.wattpad.com/user/Sun_Jester for Last Time ‘Round: www.royalroad.com/profile/686795 My blog: sunjestermusings.blogspot.com

PostsRepliesMedia
SunJester @sun-jester.bsky.social · 15h
I came up with a pretty neat family of functions related to different bases. They've got some nice pathological behavior if you ask me #MathSky #Maths #Mathematics
sunjestermusings.blogspot.com
An interesting family of functions
You probably already know that we represent numbers using base 10 (or decimal) notation. You may also know that this choice is, ultimately...
010
Reposted by SunJester
Matthew Buckley @physicsmatt.bsky.social · 18h
It's funny because noted sex-cult leader Big Yuds' argument for the AI murdering us all is that it will be a ruthlessly "logical" machine, whereas current AI is a gaussian blur of the Collective Unconscious and if it nukes us all its because we wrote a lot of fiction where AI tries to kill humans.
48518
Reposted by SunJester
Colette Delawalla, PhD @cdelawalla.bsky.social · 29/09/2026
Knowledge is NOT politically neutral. The scientific method is a tool for deriving knowledge. So why then, are we telling the arbiters of the scientific method and developers of knowledge to be politically neutral? Are scientists supposed to forsake knowledge for politics sake?
48230
SunJester @sun-jester.bsky.social · 29/09/2026
I am far more terrified of AI acting as its designers intend than I am of it going rogue
000
Reposted by SunJester
Whakim Download @plinkatron.bsky.social · 29/09/2026
Here I have a function that interested me today, so I wrote a program to plot it. The way it’s defined is it takes the sign expansion of a surreal number and feed it to a conditionally convergent series. For example, if your input is 1.5, that corresponds to (++-) -> 1/1 + 1/2 - 1/3.
211
Reposted by SunJester
Element115Art @element115.bsky.social · 28/09/2026
Over on Twitter they are talking about solutions to the Fermi Paradox. Mine is that space is huge, we haven't been looking that long, and separating the hypothetical signatures of alien civilizations from random radio noise is significantly harder than most people think.
6322
Reposted by SunJester
The Onion @theonion.com · 27/09/2026
World's Scientists Admit They Just Don't Like Mice theonion.com/worlds-scientists-admi…
World's Scientists Admit They Just Don't Like Mice
222603262
Reposted by SunJester
Chara @astrochara.bsky.social · 28/09/2026
Altair is a nearby A-type star. It is also one of the hottest nearby stars with X-ray emission, probably arising from corona around its equatorial regions, where convective envelope which sustain them persist on this highly oblate star. #art #astronomy #space #spaceart #star #Altair
This artwork depicts a fictional view of Altair's corona seen with SDO AIA camera's 171 Å channel, accompanied by some information.

At the centre is the star; the photosphere is entirely dark, and the corona can be seen as a faint band ringing the star's equator and intermediate latitudes, while the visible pole is dark. The corona is depicted as slightly heterogenous, with dark patches and bright spots scattered across it.

At top left is basic information about Altair (α Aql): mass of 1.86 ± 0.03 Solar masses, radii of 2.008 ± 0.006 Solar radii (equator) / 1.565 ± 0.014 Solar radii (pole), effective temperature of 6780 K (equator) / 8621 K (pole), and rotation period of 7.79 hours.

Top right contains my summary of Altair's coronal properties obtained from Robrade & Schmitt (2009). The coronal surface flux is comparable to solar background corona, the plasma temperature is similar to low activity stars like the Sun and is dominated by quiescent/weakly active regions and open magnetic fields with weak contributions from moderately active regions, and that the coronal structures are small (few %) relative to the star. Altair's X-ray flux varies, arising from both rotational modulation, as well as intrinsic variabilities, eg. emergence and decay of active regions. Flares are not detected, as expected.Same as previous image, although Altair's limb and equator are outlined as solid line and dashed line, respectively.
3266
Reposted by SunJester
Andrew D Hwang @diffgeom.com · 27/09/2026
A couple of days ago we had spectacular skies. The new poster design "Road Ahead" is a digital overlay of loxodrome bands. www.diffgeom.com/product/post... #MathSky #MathArt #SciArt
A photograph of brilliant orange cloud tatters above silhouetted tree tops. The sky is filled by glowing spiral ribbons lying on an enormous sphere.
084
Reposted by SunJester
Sean Carroll @seanmcarroll.bsky.social · 26/09/2026
I haven’t completely diagnosed why people judge figures like Thiel to be “smart.” Ingredients include apparent conviction and putting big words together in surprising combinations. And talking fast.
3116720
Reposted by SunJester
Alexander Kasprzyk @amkasprzyk.bsky.social · 27/09/2026
When the students ask him to explain the solution he replies, "ChatGPT (GPT-5.6) was used for foundational research and proof development. The underlying mathematical ideas are the author’s. The author reviewed the final manuscript, read every proof, and takes full responsibility for its content."
0151
Reposted by SunJester
Circ @tinyicecat.bsky.social · 24/09/2026
This news is important because all the fucks out there actively attempting to wreck the world want you to think that the work is hopeless and just mitigating the worst case scenario. It's not. Fucking keep going.
2675354445
Reposted by SunJester
beetle moses @beetlemoses.bsky.social · 26/09/2026
Three panel comic. Panel 1: 5 million years ago - a bunch of bedbugs lounge around in a living room, looking totally bored. Panel 2: another bedbug excitedly bursts through the front door and exclaims, “someone invented beds!” Panel 3: one of the bedbugs looks over their shoulder at the other and says, “you’re joking”
32130241872
Reposted by SunJester
Andrew D Hwang @diffgeom.com · 26/09/2026
"You Are Here" is a collection of 11 original, human-created (no AI) math postcards for just $15! (Includes shipping, available in the US only) www.diffgeom.com/product/you-... #MathSky #MathArt #SciArt
A gallery card showing eleven picture postcards, each a digital mathematical overlay on an original photograph.
0121
Reposted by SunJester
Astra Taylor @astra.bsky.social · 26/09/2026
Forget grandiose talk of curing cancer - this is what AI is actually doing to healthcare. In the words of one cardiologist: “it’s bots fighting bots, agents fighting agents, a horrible dystopic future nobody wants to live in.”
282158852
Reposted by SunJester
Katie Martin @katie0martin.ft.com · 25/09/2026
I have blamed The agents That hacked Your website And which You probably Reasonably thought I controlled Forgive me I am rich And unaccustomed To taking responsibility
5776142100
Reposted by SunJester
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
5337
Reposted by SunJester
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
37418
SunJester @sun-jester.bsky.social · 23/09/2026
All good things… is a great episode of #StarTrek and the best start trek finale (imo). However, one thing has always bugged me… The anti-time anomaly is said to “expand backwards in time” Sure, very cool. You could also just say that it’s shrinking #SciFi #TNG
020
Reposted by SunJester
Matt Henderson @matthen.com · 23/09/2026
Repeatedly subdividing a triangle using its centroids
1021936
Reposted by SunJester
B̵̪͕̝̜̆̒ȧ̴̱̥͓͠d̸̯̤͓́̎Ẹ̷̗͚̠͊͂̈̈́x̶̠̏̔̈́a̶͎̰͇̳͐̆͗́m̶̢̀ṕ̷͚̬̒̊l̷͠ͅe̵̝̯͙͛M̸̡͗̌͋ǎ̶̢̠̻̀͑͑ṋ̷̑̇̊͜ @badexampleman.bsky.social · 23/09/2026
Oh HELL no
1195
SunJester @sun-jester.bsky.social · 21/09/2026
This might just be my ignorance talking, but why do people consider computer-checked proofs to be infallible? I get why’d someone think that they were more secure than a human proof. But, like, Lean has bugs you know. It’s certainly isn’t perfect… #MathSky #Lean #Logic
210
Reposted by SunJester
The Onion @theonion.com · 23/01/2026
CERN Researchers Apologize For Destruction Of 5 Parallel Universes In Recent Experiment theonion.com/cern-researchers-apolo…
CERN Researchers Apologize For Destruction Of 5 Parallel Universes In Recent Experiment
2276378
Reposted by SunJester
Jay Foreman @jayforeman.bsky.social · 21/09/2026
New #MapMen episode!!! 🗺️ How many languages are there in the world? And can you put them all on one map? (No.) youtu.be/hX21ctsGhNc Share and enjoy!
youtu.be
Why a Language Map of the World is Impossible
YouTube video by Map Men
1128160
Reposted by SunJester
Leo Vader @leovader.com · 20/09/2026
hi i’m the guy who makes airport power outlets so all your shit falls out of them. i’m like a the Joker type guy
218310
Reposted by SunJester
Antonio E. Porreca 🐳 @aeporreca.org · 20/09/2026
Am I strange? I honestly doubt that even the most ardent formalists only actually thought about mathematical objects as symbols on a piece of paper when actually doing maths.
121
Reposted by SunJester
S.Dom AKA Wolf 🦌 @woestruction.bsky.social · 20/09/2026
Somewhere in a distant planetary system, some civilization decided "the moon next to the one we live on looks pretty comfortable, maybe we should check it out?" For the most part they were correct, though their rover didn't last nearly as long as they hoped. "Meteorological malfunctions" they said.
A blue gas giant hangs in the sky above a colorful landscape, purple-red mountains in the distance tower over a terrain awashed by various sandy and dull green hues. A snaking trail in the dirt extends off towards the horizon, with a small rover wrapped in golden foil overturned on its bank. Following the trail leads the the base of a tornado, wrapped in a debris cloud. The funnel twists up into a stormy sky of heavy, chaotic clouds.
12410
SunJester @sun-jester.bsky.social · 20/09/2026
Just learned Euclid never states the fundamental theorem of arithmetic ... I feel betrayed #MathSky #HistSky
040
Reposted by SunJester
shaun @shaunvids.bsky.social · 20/09/2026
*gripping a usb hard drive and pretending to wrestle with it* guys help i got skynet trapped in here. bail me out quick
122012242
Reposted by SunJester
Esc @escmike.bsky.social · 18/09/2026
It’s probably the most egregious handwave in history. It venerates their own intelligence myths: that if something is smart enough it is trivial for it to do whatever it wants. No accounting for physical reality.
11252
Reposted by SunJester
Birbbirbbirb1 @birbbirbbirb1.bsky.social · 19/09/2026
WASP-47 A very peculiar system I must say... A super-Earth orbiting inwards of a hot Jupiter and a hot Neptune. A temperate giant also lies further outward. It is kind of similar to 55 Cancri, but with a more extreme inner system.
WASP-47 e, b, d and an arrow pointing to the out of frame c
2205
Reposted by SunJester
Alex Ries @alexries.com · 19/09/2026
Alien of the Day: The Cinruss This image of the Cinruss is from a spread in 'Barlowe's Guide to Extraterrestrials', one of my favourite books, and one of the first put out by Wayne in his early career. I find these fellows delightful!
a page spread of an alien creature
415224
Reposted by SunJester
Viktor Blåsjö @viktorblasjo.bsky.social · 08/07/2026
I made some 3D-printed reconstructions of historical instruments for drawing conic sections: github.com/viktorblasjo...
081
Reposted by SunJester
Marc Knelsen @marcknelsen.art · 18/09/2026
Generative AI relies on people's lack of empathy to thrive, as long as it not your ass in the line, it's okay, right? Artists can adapt, musicians, writers, actors and voice actors can all adapt, but god forbid if it starts threatening to replace you.
421130
Reposted by SunJester
Andrew D Hwang @diffgeom.com · 17/09/2026
A happy 200th birthday to Georg Friedrich Bernhard Riemann #MathSky #MathArt #SciArt
The complex arcsine, an infinite stack of cross-joined, doubly-slit planes in shades of blue and bronze that meet along a glowing green vertical sine curve.
0232
SunJester @sun-jester.bsky.social · 17/09/2026
Today is the day! 200 years since Riemann's birth. I decided to write a short blog post explaining three of his major contributions: Riemannian geometry, Riemann surfaces and, of course, the Riemann hypothesis. Happy birthday Riemann #MathSky #200YearsRiemann #HistSky
sunjestermusings.blogspot.com
200 years Bernhard Riemann
Bernhard Riemann was one of the most important mathematicians in history. Born on the 17th of September 1826, he made several huge contribut...
030
Reposted by SunJester
EmperorTigerstar @emperortigerstar.bsky.social · 17/09/2026
NEW EARTH UPDATE! WE HAVE A NEWLY DISCOVERED SPECIES OF CAT! THIS IS NOT A DRILL! It is called either the Tilcayo Tiger Cat or Leopardus Tilcayo. Found in Bolivia right where the Amazon meets the Andes.
27118
SunJester @sun-jester.bsky.social · 16/09/2026
This thursday it'll be 200 years after Riemann's birth. The Riemann integral is a way to define what the definite integral of a function is. The area under a curve can be approximated by many small vertical rectangles! #MathSky #200YearsRiemann #HistSky
Riemann integral of a functionBernhard Riemann
110
SunJester @sun-jester.bsky.social · 16/09/2026
Sometimes I wish crypto-bros had gotten to AI first and poisoned the well … *sigh*
000
Reposted by SunJester
Gro-Tsen @gro-tsen.bsky.social · 15/09/2026
Clearly we need to completely stop rewarding “being the first to solve a problem” (this rush is completely idiotic) and transition to “write exposition in a clear and elegant way”. The question is now how to incentivize this!
0407
Reposted by SunJester
Joshua Grochow @joshuagrochow.bsky.social · 15/09/2026
I’m starting to wonder if we can just all agree somehow that math produced mostly or entirely by LLMs, even if technically correct, is just not an accepted part of the human community of mathematics. Make it de jure that AI simply cannot scoop a human mathematician. It should be a category error.
5474
SunJester @sun-jester.bsky.social · 15/09/2026
This thursday it'll be 200 years after Riemann's birth. Riemannian geometry generalised the notions of curvature and distance that Gauss had developed for smooth surfaces to manifolds of arbitrary dimension. This is also the first mention of >4 dimensions* #MathSky #200YearsRiemann #HistSky
Bernhard Riemann
100
SunJester @sun-jester.bsky.social · 14/09/2026
This thursday it'll be 200 years after Riemann's birth. Riemann surfaces are 1-dimensional connected complex manifolds, i.e. 2-dim connected real manifolds with holomorphic transition maps. He introduced these to study multivalued functions over C, such as sqrt #MathSky #200YearsRiemann #HistSky
Bernhard RiemannThe Riemann surface of the square root function
021
SunJester @sun-jester.bsky.social · 14/09/2026
The axiom of choice is bullshit [goes on to use Zorn’s lemma] #MathSky
110
Reposted by SunJester
EmperorTigerstar @emperortigerstar.bsky.social · 11/09/2026
New video! The UN declared an official world map? Well, kind of. Let's learn about it! youtu.be/WMZmlbgdgFA
youtu.be
Explaining The New Official World Map
YouTube video by EmperorTigerstar
44111
Reposted by SunJester
Matt Bors @mattbors.bsky.social · 14/09/2026
It was exactly ten years ago today, on my 33rd birthday, that I posted this comic online.
484297707660
SunJester @sun-jester.bsky.social · 12/09/2026
Algebraic geometry is a scheme which is integral to the resolution of singularities in our understanding of manifold different subjects #MathSky
110
Reposted by SunJester
jamelle @jamellebouie.net · 12/09/2026
yeah, i think i just have a lot more appreciation for movies that have A Take even if they don’t entirely work. i’d rather watch something bad that represents a vision than something that’s decent but clearly built by committee
1445318
SunJester @sun-jester.bsky.social · 11/09/2026
One thing I've never understood about using AI (especially in math and art) is how people deal with the complete lack of any sense of accomplishment. It's a similar feeling to solving an exercise by using the answer sheet or stack exchange (1/2) #MathSky #AI #rant
130
Reposted by SunJester
Microplastics Sommelier @leastactionhero.bsky.social · 11/09/2026
the courtroom scene from 'the drumhead' is what everyone talks about, but the concluding epilogue really feels like it’s reaching out across time from 1991
2 screens from Star Trek: The Next Generation's 'The Drumhead' (S4E21). Worf and Picard are standing in the observation lounge, the captain is staring out the windows contemplatively.
Worf: It is over. Admiral Henry has called an end to any more hearings on this matter. Admiral Satie has left the Enterprise.
Picard: We think we've come so far. The torture of heretics, the burning of witches, it's all ancient history. Then, before you can blink an eye, it suddenly threatens to start all over again.2 screens from TNG 'The Drumhead'
Worf: I believed her. I helped her. I did not see what she was.
Picard: Mr. Worf, villains who twirl their mustaches are easy to spot. Those who clothe themselves in good deeds are well camouflaged.3 screens from TNG 'The Drumhead'
Worf: I think after yesterday, people will not be as ready to trust her. 
Picard: Maybe. But she, or someone like her, will always be with us, waiting for the right climate in which to flourish, spreading fear in the name of righteousness.
Picard: Vigilance, Mr. Worf, that is the price we have to continually pay.
2398159