johncarlosbaez

8 ms·

1.
by johncarlosbaez 6mo ago
Adelson-Velsky and Evgenii Landis were not the ones who named their tree the "AVL tree". In my "crackpot index", item 20 says: 20 points for naming something after yourself. (E.g., talking about the "The Evans Field
2.
by johncarlosbaez 11mo ago
Yes - by cooling it. See the problem?
3.
by johncarlosbaez 11mo ago
You need to go more slowly and do lots of examples. Maybe start with * Karen E. Smith, Lauri Kahanpää, Pekka Kekäläinen and William Traves, An Invitation to Algebraic Geometry, Springer, Berlin, 2004. and then this: * Igor R. Shafarevich,
4.
by johncarlosbaez 11mo ago
This claimed proof is a bunch of baloney: * First, it's written in the typical style of AI slop. * Second, a mathematician I know and trust writes "I went straight to the technical part (Sect. 3) and randomly checked one of the re
5.
Neutrinos and Gold [video](youtube.com)
2 points by johncarlosbaez 1y ago|1 comments
6.
by johncarlosbaez 1y ago
I'm starting to make videos for the University of Edinburgh. My first one was about this paper saying that neutrino oscillations may increase the formation of gold and other heavy elements in neutron star mergers: • Neutrino flavor tr
7.
by johncarlosbaez 1y ago
Or if you believe the simulation hypothesis, the second-largest.
8.
by johncarlosbaez 1y ago
Quoting https://thenieveslawfirm.com/do-police-have-to-identify-them... : You’re minding your own business when a police officer approaches you. They start asking questions, but something feels off. You ask for their name an
9.
by johncarlosbaez 1y ago
"Whatever the reason, the resistance to AC technology is making Europe a more impoverished civilization. It’s a major reason why Europe now feels shabbier and more hardscrabble than America..." It feels shabbier and more hardscabb
10.
by johncarlosbaez 1y ago
It's a little late for a "wakeup call", no? More like "wake up, your house is on fire and behind your bedroom door it's a raging inferno out there". > The economics profession should reflect on the fact tha
11.
by johncarlosbaez 2y ago
Fixed - thanks.
12.
by johncarlosbaez 2y ago
Never a good sign for a physics theory when the headline says it's "not dead".
13.
by johncarlosbaez 2y ago
My fifteen minutes of fame have finally arrived? :-)
14.
by johncarlosbaez 2y ago
Strange title, since we've known for a long time that Mars has an atmosphere unlike our own.
15.
by johncarlosbaez 2y ago
Why would anyone care what Rand Paul thinks?
16.
by johncarlosbaez 2y ago
Yes, we've really sunk to this: a rebel theoretical physicist feels the need to debate a guy who claims 1 × 1 = 2, presumably just to get some more publicity. Howard's Wikipedia page hints at how he became this confused: "He
17.
by johncarlosbaez 2y ago
It's good to do if your life isn't boring enough and you need to avoid pleasure.
18.
by johncarlosbaez 2y ago
I know plenty of math, but having more ignorant victims will make it easier.
19.
by johncarlosbaez 2y ago
I hope they stop teaching people to calculate. Then I'll start up my career in fraud and embezzlement.
20.
Why does current flow the opposite way from the electrons?(mathstodon.xyz)
245 points by johncarlosbaez 2y ago|242 comments
21.
by johncarlosbaez 2y ago
That explains having a 50% chance of seeing an electron somewhere, not seeing an entity of charge 1/2. It's like a weather report saying there's a 50% chance of rain doesn't mean you're going to see little raindro
22.
by johncarlosbaez 2y ago
Maybe, but getting fractional charges out of a system with charges that are integer multiples of the electron charge is no mean feat, and I want to understand the math behind this in detail. Someone knows, but I haven't found any clea
23.
by johncarlosbaez 2y ago
I've never seen a good clear explanation of "fractionalization" - the way that that systems can contain excitations that act like particles with charges that are a fraction of the electron charge. A typical non-explanation:
24.
by johncarlosbaez 2y ago
Everything is always subliminally affecting you. It might as well do it in a helpful way.
25.
by johncarlosbaez 2y ago
It's too bad the top-rated answer on Reddit says "GR does not say Gravity is not a force (or if you do say it’s not a force, then none of the other forces are forces either)" rather than explaining what people mean when they
26.
Hardy, Ramanujan and Taxi No. 1729(johncarlosbaez.wordpress.com)
134 points by johncarlosbaez 5y ago|21 comments
27.
by johncarlosbaez 5y ago
I just looked into this story, and there was more to it than we usually hear.
28.
The first 10^1100 years of the universe(johncarlosbaez.wordpress.com)
5 points by johncarlosbaez 5y ago|0 comments
29.
The Biggest Open Questions About Neutrinos(johncarlosbaez.wordpress.com)
2 points by johncarlosbaez 6y ago|0 comments
30.
Free course an applied category theory for engineers(johncarlosbaez.wordpress.com)
3 points by johncarlosbaez 6y ago|0 comments

More ›