Cas
@cas.myatproto.social
(Complex/Differential) Geometer/Physicist | Posts deleted after roughly 3mo | allergic to attention
Reposted by Cas
Christmas in space, illustrated by Moebius, 1982.
December 25, 2025 at 2:10 AM
Christmas in space, illustrated by Moebius, 1982.
Reposted by Cas
it's Christmas Eve but it's also the 16 year anniversary of the time an art historian for the Hungarian National Gallery spotted a long lost painting while watching Stuart Little with his 3-year-old daughter, recognizing it in the movie set
December 24, 2025 at 11:40 AM
it's Christmas Eve but it's also the 16 year anniversary of the time an art historian for the Hungarian National Gallery spotted a long lost painting while watching Stuart Little with his 3-year-old daughter, recognizing it in the movie set
Reposted by Cas
A neat little topology problem with a cute solution
This was a neat problem, I've written my thoughts (in ROT13) below
Ivrj gur Rnegu nf PC1 naq yrg s: [0,1] → PC1 or lbhe cngu naq pubbfr c, d ∈ PC1\(vz(s) ∪ {∞}) nf orsber. Yrg a_c naq a_d or gur jvaqvat ahzoref nebhaq ∞ jegb fgrerbtencuvp cebwrpgvba sebz c, d erfcrpgviryl.
Ivrj gur Rnegu nf PC1 naq yrg s: [0,1] → PC1 or lbhe cngu naq pubbfr c, d ∈ PC1\(vz(s) ∪ {∞}) nf orsber. Yrg a_c naq a_d or gur jvaqvat ahzoref nebhaq ∞ jegb fgrerbtencuvp cebwrpgvba sebz c, d erfcrpgviryl.
December 13, 2025 at 9:30 PM
A neat little topology problem with a cute solution
Reposted by Cas
pick two points p,q that your path does not cross (in addition to the north pole); your winding number about the NP can be defined using the stereographic projection from either p or q. How are these numbers related?
December 13, 2025 at 8:00 PM
pick two points p,q that your path does not cross (in addition to the north pole); your winding number about the NP can be defined using the stereographic projection from either p or q. How are these numbers related?
Reposted by Cas
At some point I'm going to have to figure out this ADHD thing. Spending three hours rewriting someone else's program for my own use was not a productive way to spend my time
I haven't done what I'm supposed to do (yet) but I have had what feels like a remarkably productive day.
I think I am being thrown the bone that I hoped and prayed for earlier in the week
I think I am being thrown the bone that I hoped and prayed for earlier in the week
December 6, 2025 at 9:41 AM
At some point I'm going to have to figure out this ADHD thing. Spending three hours rewriting someone else's program for my own use was not a productive way to spend my time
Reposted by Cas
love this feature of the human brain that sometimes, for no obvious reason, makes you wake up and feel about as calm as a warren-less rabbit on an open field with eagles flying overhead
December 2, 2025 at 9:37 AM
love this feature of the human brain that sometimes, for no obvious reason, makes you wake up and feel about as calm as a warren-less rabbit on an open field with eagles flying overhead
Reposted by Cas
bsky.app/profile/chba...
ironically LW/SSC became woo bc it made the reified notion of Science into a self help program
ironically LW/SSC became woo bc it made the reified notion of Science into a self help program
"Let's turn some reified notion of Science into a political tendency" — People about to create another of the stupidest political groups known to humanity. Like, I personally watched New Atheism collapse into transphobia and Rationalism (LW/SSC) become some Neoreaction front. It doesn't work.
November 23, 2025 at 4:24 AM
bsky.app/profile/chba...
ironically LW/SSC became woo bc it made the reified notion of Science into a self help program
ironically LW/SSC became woo bc it made the reified notion of Science into a self help program
Reposted by Cas
but organizationally the bigger issue is that it is very difficult to make a coalition that isn’t susceptible to being hijacked by entryism. that isn’t solely a left problem, you can see this in what happened to “abundance” this year
November 23, 2025 at 3:58 AM
but organizationally the bigger issue is that it is very difficult to make a coalition that isn’t susceptible to being hijacked by entryism. that isn’t solely a left problem, you can see this in what happened to “abundance” this year
Reposted by Cas
rhetorically the challenge is making an appeal that ties inclusiveness and equity to the fact that we are a rich and technically advanced country that has an enormous capacity to better the lives of many more people than we currently do….and conservatives are for burning it all to ground
November 23, 2025 at 3:55 AM
rhetorically the challenge is making an appeal that ties inclusiveness and equity to the fact that we are a rich and technically advanced country that has an enormous capacity to better the lives of many more people than we currently do….and conservatives are for burning it all to ground
Reposted by Cas
unfortunately it won’t be “woke” if it is “aggressively pro science and medicine.” because such sentiments run smack dab into armies of educated people with paens to “alternative ways of knowing” and racist beliefs that non-white people don’t appreciate science and medicine
I'm all for woke 2 as long as we agree woo-woo is out, I want aggressively pro-science and medicine thanks
November 23, 2025 at 3:30 AM
unfortunately it won’t be “woke” if it is “aggressively pro science and medicine.” because such sentiments run smack dab into armies of educated people with paens to “alternative ways of knowing” and racist beliefs that non-white people don’t appreciate science and medicine
Reposted by Cas
November 22, 2025 at 6:44 PM
I haven't done what I'm supposed to do (yet) but I have had what feels like a remarkably productive day.
I think I am being thrown the bone that I hoped and prayed for earlier in the week
I think I am being thrown the bone that I hoped and prayed for earlier in the week
November 22, 2025 at 9:58 PM
I haven't done what I'm supposed to do (yet) but I have had what feels like a remarkably productive day.
I think I am being thrown the bone that I hoped and prayed for earlier in the week
I think I am being thrown the bone that I hoped and prayed for earlier in the week
Reposted by Cas
new soulsov in 10 days you have to catch up rightnow
hello. i am making a visual novel called "soul of sovereignty," or #soulsov. i'm told it's very good. have you played it yet? gigidigi.itch.io/soulsov
November 11, 2025 at 1:08 PM
new soulsov in 10 days you have to catch up rightnow
Me: Gorcenski's skeeter deleter fills a niche, but it's lacking some features I'd really appreciate. I should write my own version.
The thesis, two work projects, two essays, and grading I still need to finish: じーーーーーーーーー
The thesis, two work projects, two essays, and grading I still need to finish: じーーーーーーーーー
November 9, 2025 at 6:47 PM
Me: Gorcenski's skeeter deleter fills a niche, but it's lacking some features I'd really appreciate. I should write my own version.
The thesis, two work projects, two essays, and grading I still need to finish: じーーーーーーーーー
The thesis, two work projects, two essays, and grading I still need to finish: じーーーーーーーーー
Reposted by Cas
did anyone do this yet
November 8, 2025 at 11:35 PM
did anyone do this yet
Reposted by Cas
in my dream i was being really nice to this kid and he called me a new slur for people who are really nice
November 8, 2025 at 2:14 PM
in my dream i was being really nice to this kid and he called me a new slur for people who are really nice
Reposted by Cas
C.S. Lewis responding to a letter from an American schoolgirl asking him for some writing advice.
(Worth reading? ✅️)
(Worth reading? ✅️)
October 24, 2025 at 8:19 PM
C.S. Lewis responding to a letter from an American schoolgirl asking him for some writing advice.
(Worth reading? ✅️)
(Worth reading? ✅️)
Reposted by Cas
Really miss Circles as a concept. It's important to be able to have public breakdowns in front of slightly fewer online strangers
October 20, 2025 at 10:31 PM
Really miss Circles as a concept. It's important to be able to have public breakdowns in front of slightly fewer online strangers
Reposted by Cas
My point is that we are engaged in a fundamentally moral argument about how society ought to be, not a factual argument about how reality is. I am very wise. Now, if you'll excuse me, I forgot to bring underpants and socks on a trip to Glasgow so I have to go and buy some.
It seems pointless to fact check someone saying "curry isn't proper British food like fish and chips", just like it's futile to correct someone saying "there are no pronouns in the Bible". They haven't made a mistake. What they're saying is, "Britain is a white country".
October 18, 2025 at 3:03 PM
My point is that we are engaged in a fundamentally moral argument about how society ought to be, not a factual argument about how reality is. I am very wise. Now, if you'll excuse me, I forgot to bring underpants and socks on a trip to Glasgow so I have to go and buy some.
Reposted by Cas
Reposted by Cas
In today's blog post, @StevenClontz shares his passion for getting mathematicians (and other mathy academic types) up and running using GitHub tools that only require a web browser.
mathtech.org/2025/10/10/g...
mathtech.org/2025/10/10/g...
Getting Started with GitHub
This post is supported by National Science Foundation award #2449139. While anyone in the mathematical sciences should have no trouble engaging in the development of software supporting math-relate...
mathtech.org
October 10, 2025 at 5:33 PM
In today's blog post, @StevenClontz shares his passion for getting mathematicians (and other mathy academic types) up and running using GitHub tools that only require a web browser.
mathtech.org/2025/10/10/g...
mathtech.org/2025/10/10/g...
Reposted by Cas
love your work mrs theranos but how do you walk into this
October 8, 2025 at 10:09 PM
love your work mrs theranos but how do you walk into this
Reposted by Cas
About to post a take on the latest fracas when the ghost of a Roman emperor snatches the phone from my hand.
October 5, 2025 at 11:42 PM
About to post a take on the latest fracas when the ghost of a Roman emperor snatches the phone from my hand.