Aram Harrow
@harrowing.bsky.social
Like Scott, I used chatgpt for a proof. It gave me something convincing but wrong.
Still, it led me to a 1964 theorem about medians of sums of Bernoullis. And to fast algorithms for computing many power sums at once.
Below was my first attempt. See if you can find the bug.
Still, it led me to a 1964 theorem about medians of sums of Bernoullis. And to fast algorithms for computing many power sums at once.
Below was my first attempt. See if you can find the bug.
October 10, 2025 at 2:02 PM
Like Scott, I used chatgpt for a proof. It gave me something convincing but wrong.
Still, it led me to a 1964 theorem about medians of sums of Bernoullis. And to fast algorithms for computing many power sums at once.
Below was my first attempt. See if you can find the bug.
Still, it led me to a 1964 theorem about medians of sums of Bernoullis. And to fast algorithms for computing many power sums at once.
Below was my first attempt. See if you can find the bug.
The word "macroscopic" always confused me. This is like a W state, not a cat state, right? Do you know of any good discussion of this point?
October 8, 2025 at 7:57 AM
The word "macroscopic" always confused me. This is like a W state, not a cat state, right? Do you know of any good discussion of this point?
The money pays for research. If those contracts stop, the research stops. Yes private donations and industrial funding will still exist but the total amount of research will go down.
September 15, 2025 at 5:17 AM
The money pays for research. If those contracts stop, the research stops. Yes private donations and industrial funding will still exist but the total amount of research will go down.
Apple has to pay college-educated employees more. And colleges give training that's more general and more externally legible than you'd get from a company, thus raising the employees' market value more. So I see your point but it's not at all clear that this is a "subsidy".
June 2, 2025 at 1:49 AM
Apple has to pay college-educated employees more. And colleges give training that's more general and more externally legible than you'd get from a company, thus raising the employees' market value more. So I see your point but it's not at all clear that this is a "subsidy".
Endowments are used more for research than undergrad education.
June 2, 2025 at 1:41 AM
Endowments are used more for research than undergrad education.
Thanks Earl! I'm glad you enjoyed it. We really found qDRIFT and your later paper with Berta+Wan inspirational and we think there's a lot of room for more use of those ideas still.
May 20, 2025 at 3:15 PM
Thanks Earl! I'm glad you enjoyed it. We really found qDRIFT and your later paper with Berta+Wan inspirational and we think there's a lot of room for more use of those ideas still.
"why" is always tough because there's no objective answer but the dirac plate etc are meant to illustrate that the fundamental group of SO(3) is Z_2, suggesting its universal cover should map to SO(3) via a 2-1 map. see also
math.stackexchange.com/questions/11...
math.stackexchange.com/questions/11...
Universal covering of $SO(3,\mathbb{R})$
How do you prove that the universal covering of $SO(3, \mathbb{R})$ is $S^3$ ? Or equivalently, that it is diffeomorphic to $P_3\mathbb{R}$ ?
Thank you for your answers.
math.stackexchange.com
April 1, 2025 at 1:30 PM
"why" is always tough because there's no objective answer but the dirac plate etc are meant to illustrate that the fundamental group of SO(3) is Z_2, suggesting its universal cover should map to SO(3) via a 2-1 map. see also
math.stackexchange.com/questions/11...
math.stackexchange.com/questions/11...
School closures were hard on kids, not only for test scores. I'm guessing you haven't talked to many parents about this topic?
Maybe a necessary evil, but certainly not a trivial cost.
Maybe a necessary evil, but certainly not a trivial cost.
March 24, 2025 at 12:29 AM
School closures were hard on kids, not only for test scores. I'm guessing you haven't talked to many parents about this topic?
Maybe a necessary evil, but certainly not a trivial cost.
Maybe a necessary evil, but certainly not a trivial cost.
It's even more impressive without the !.
March 17, 2025 at 8:15 PM
It's even more impressive without the !.
That's what all physicists hope for more than anything else.
March 12, 2025 at 4:02 PM
That's what all physicists hope for more than anything else.
Selling exceptions is lucrative.
March 5, 2025 at 12:31 AM
Selling exceptions is lucrative.
Yeah, it is definitely cooler than its symmetric cousin.
February 22, 2025 at 12:04 PM
Yeah, it is definitely cooler than its symmetric cousin.
I don't find this claim too offensive. Yes they're no better at sending cbits but they're more powerful in other ways. "Richer information" would be better than "more information" but also raises more questions.
February 22, 2025 at 12:02 PM
I don't find this claim too offensive. Yes they're no better at sending cbits but they're more powerful in other ways. "Richer information" would be better than "more information" but also raises more questions.
craphound.com/category/una...
It's more DRM than AI, but then again "AI" in most of these examples just means "algorithms."
It's more DRM than AI, but then again "AI" in most of these examples just means "algorithms."
Unauthorized Bread Audiobook | Cory Doctorow's craphound.com
craphound.com
January 5, 2025 at 5:10 PM
craphound.com/category/una...
It's more DRM than AI, but then again "AI" in most of these examples just means "algorithms."
It's more DRM than AI, but then again "AI" in most of these examples just means "algorithms."
There is of course a Cory Doctorow short story on this theme.
January 5, 2025 at 12:17 PM
There is of course a Cory Doctorow short story on this theme.