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Kai

@kaichung.bsky.social

Condensed matter theorist, math hobbyist

482 Followers  |  866 Following  |  301 Posts  |  Joined: 26.07.2023
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Posts by Kai (@kaichung.bsky.social)

maybe we shouldn't have made everything shit

06.03.2026 20:06 β€” πŸ‘ 24    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

Jfc

05.03.2026 13:54 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I have not been following what’s been going on with Bouie but my general takeaway is that he is way too online and addicted to social media attention

05.03.2026 13:49 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Agreed that zed is simply unmistakable, and I think it sounds good too. When I first moved to Canada I struggled to get used to saying it but now I find I just say it without thinking quite often.

04.03.2026 03:42 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Out of curiosity is there any reason to think that qft doesn’t handle bound states?

04.03.2026 03:33 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Preview
The rise of vice-signalling: how hatred poisoned politics Over the last 10 years, the terms of political debate have changed completely – and week by week they seem to get worse

"Every vice-signal, whether it’s Trump or Farage or Jenrick or Herbert Kickl, is telling you the rules are over. If you can’t believe them the first time, at least believe them the 100th." @zoesqwilliams.bsky.social

The Anti-Vice Popular Front is expanding

www.theguardian.com/us-news/2026...

11.02.2026 12:34 β€” πŸ‘ 203    πŸ” 63    πŸ’¬ 4    πŸ“Œ 7

I think we should equip simplicial complexes with metrics. I call it simplectic geometry

09.02.2026 19:33 β€” πŸ‘ 13    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

Great podcast tho

05.02.2026 23:23 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

They must have gotten sued again lol

05.02.2026 23:23 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

Huh

03.02.2026 19:29 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Secretary Kristi Noem

@Sec_Noem
I just spoke with 
@RealTomHoman
 
@ICEDirector
 
@CBPCommissioner
. Effective immediately we are deploying body cameras to every officer in the field in Minneapolis. 

As funding is available, the body camera program will be expanded nationwide. We will rapidly acquire and deploy body cameras to DHS law enforcement across the country. 

The most transparent administration in American historyβ€”thank you 
@POTUS
 Trump. 

Make America Safe Again πŸ‡ΊπŸ‡Έ

Secretary Kristi Noem @Sec_Noem I just spoke with @RealTomHoman @ICEDirector @CBPCommissioner . Effective immediately we are deploying body cameras to every officer in the field in Minneapolis. As funding is available, the body camera program will be expanded nationwide. We will rapidly acquire and deploy body cameras to DHS law enforcement across the country. The most transparent administration in American historyβ€”thank you @POTUS Trump. Make America Safe Again πŸ‡ΊπŸ‡Έ

Congrats to Hakeem Jeffries. He’s worked so hard for this victory.

02.02.2026 21:51 β€” πŸ‘ 820    πŸ” 128    πŸ’¬ 70    πŸ“Œ 84

Es-tu-dee-llo

03.02.2026 04:37 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 1

Half a million for less than 1000 square feet 😭

02.02.2026 13:32 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Post image

President Trump has filed a lawsuit against the IRS, in which he demands that the IRS, which he as president controls, pay him $10 billion.

storage.courtlistener.com/recap/gov.us...

30.01.2026 00:56 β€” πŸ‘ 3715    πŸ” 1543    πŸ’¬ 397    πŸ“Œ 834

Incredible how flimsy a pretext people need to convince themselves they aren't just being hateful bigots

30.01.2026 03:13 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

That is a nice Leaf

30.01.2026 00:36 β€” πŸ‘ 1    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
New poll β€” Abolishing ICE continues its historic surge of support.

46% support
43% oppose

80% of Democrats and 15% of Trump voters support abolishing ICE.
Independents are +8 on the question.

New poll β€” Abolishing ICE continues its historic surge of support. 46% support 43% oppose 80% of Democrats and 15% of Trump voters support abolishing ICE. Independents are +8 on the question.

New poll β€” Abolishing ICE continues its historic surge of support.

46% support
43% oppose

80% of Democrats and 15% of Trump voters support abolishing ICE.
Independents are +8 on the question.

29.01.2026 15:42 β€” πŸ‘ 1147    πŸ” 316    πŸ’¬ 38    πŸ“Œ 86

So somehow I only just learned how to think of a group as a monoidal category and damn that's awesome but how did I not know this already

29.01.2026 16:46 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
A fun song about an entirely fictional character #funnysong #jeffbezos
YouTube video by Carter Vail A fun song about an entirely fictional character #funnysong #jeffbezos

youtube.com/shorts/kaazW...

29.01.2026 15:10 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Agree that increasing the number of doors makes it pretty clear. With 100 doors, you have a 1% chance it's behind the door you chose and a 99% chance it's behind one of the others. If 98 doors are then opened to reveal goats, there's a 99% chance that the car is behind the door you didn't pick.

29.01.2026 14:55 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Think about it like this. This ICE agent was on camera and unmasked β€” fulfilling one of three "demands" Democratic leader Chuck Schumer just issued in order to agree to save Republicans and give DHS even more money.

And he was still threatening to kill someone.

28.01.2026 20:42 β€” πŸ‘ 4716    πŸ” 1828    πŸ’¬ 64    πŸ“Œ 54

Take his personal army away from him while you can, you stupid, stupid assholes. You’re like an armadillo playing dead in the middle of the road so the semi won’t hurt you

28.01.2026 23:44 β€” πŸ‘ 12718    πŸ” 2676    πŸ’¬ 36    πŸ“Œ 124

quite obviously the mandate for bari weiss was to neuter the fact finding and journalistic functions of CBS news for all the obvious reasons. but im pretty sure she herself isn't in on that joke. i think she thinks she's doing a great job at vital work

29.01.2026 00:30 β€” πŸ‘ 1389    πŸ” 132    πŸ’¬ 29    πŸ“Œ 8

Man this sucks. Natalie Walchover used to do such next science reporting

28.01.2026 13:12 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

(Specialize to the case p=0 for particles)

27.01.2026 14:35 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Seems natural to think of the current form as PoincarΓ© dual to the world lines of particles. I think I got this perspective from Appendix A and B of this paper arxiv.org/pdf/2303.08136

27.01.2026 14:35 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

Why not natural? Current ad 3-form means the spatial part is a 2-form representing flux (of charge) through codimension-1 surfaces (relative to space dimension) per unit time. This seems like the natural definition of current (density) to me

27.01.2026 14:28 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

we have an incredible capacity to make the abnormal normal but i think all the load bearing contradictions are impossible for the vast majority of people to ignore any longer. you either get to live in a free society or you don't. window for getting off the fence on that one is closing fast

26.01.2026 23:35 β€” πŸ‘ 255    πŸ” 16    πŸ’¬ 4    πŸ“Œ 0

Same energy as "calling for more training of ICE thugs is moving towards abolishing ICE"

26.01.2026 16:16 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

"The oil and sulphur; the coal and iron; the cotton and corn; lumber and cattle belong to you the workers, black and white, not to the thieves who hold them and use them to enslave you. They can be rescued and restored to the people if you have the guts to strive..."

24.01.2026 13:08 β€” πŸ‘ 669    πŸ” 168    πŸ’¬ 2    πŸ“Œ 0