David Meyer

selective synthesist

[Litong Deng @_litongdeng]

Profs told me they see AI/LLM usage, low engagement & a lack of mathematical preparation as potential reasons for this decline. Many have joined 1,300+ UC faculty in signing a petition calling for the return of SAT/ACT in STEM admissions.

Read more here:
https://t.co/sABnPJUC1j

[Litong Deng @_litongdeng]

Students are failing UC Berkeley CS classes at an alarming rate. More than 35% of students failed CS 10, a course described as “a gentle but thorough introduction to computer science.” In the past few semesters, less than 10% of students failed the class.

[Lonna Atkeson @LonnaAtkeson]

Gave a talk at the Florida Supervisor of Elections meeting on our initiative to put post election audit and ballot image online for review. Join our initiative! https://t.co/tW6wFcZH2o

[David Meyer @dajmeyer]

.@dwallacewells, Soccer nationalism is on the retreat https://t.co/BmQTa6I126
"For all of us, rooting for @Arsenal or @PSG_inside might now be more appealing precisely because it’s essentially meaningless."

[David Meyer @dajmeyer]

.@garyleff, American Airlines CEO Celebrates Taking Away Free First Class Upgrades — Says Customers Will Pay https://t.co/j9MBMTmQ2W
"the main motivation for staying loyal to an airline is gone"
Care to respond, @AmericanAir?

[David Meyer @dajmeyer]

.@guo_krystal, What does #AI do for the working mathematician? https://t.co/Lz7msuFkj3
"Why, look you, I am nettled and stung with pismires when I read of 'the end of math'."

[David Meyer @dajmeyer]

@ArundauQ @thomasgwong Thanks, I'll take a look.

[David Meyer @dajmeyer]

@ArundauQ @thomasgwong Is there a paper on this you recommend? Maybe Sugawara, "General formulation of locally designed coherent control theory for quantum system" https://t.co/QuJcwSp0ZQ ?

[David Meyer @dajmeyer]

For analytical results we write evolution as time rescaled linear evolution + remainder R(t), then bound accumulated operator norm of R(t). Argument uses Duhamel/variation-of-constants & Grönwall/bootstrap estimates to show nonlinear trajectory remains close to linear one.

[Tom Wong @thomasgwong]

New paper with @dajmeyer on "Spatial Search by Nonlinear Quantum Walk," where we show that physically motivated effective nonlinearities can solve some spatial search problems more quickly using a continuous-time quantum walk. Read it at https://t.co/dmQWZebKQr.

[David Meyer @dajmeyer]

Newest National Park Mystery, _Great Sand Dunes Massacre_ by Scott Graham just arrived from @TorreyHouse. Looking forward to reading it!

[David Meyer @dajmeyer]

@skominers I agree, of course, and this mathematical part of economics is what most interests me. But, as you well know, in the last couple of decades the field has turned more towards experimental/behavioral explanations for economic phenomena.

[David Meyer @dajmeyer]

It’s certainly conceptually interesting to make implicit assumptions in economic models explicit, but I’m not sure how useful it is, since most economic modeling assumptions are violated in real life (e.g., rational agents, equilibrium, …).

[Scott Kominers @skominers]

Super excited to share joint work with @axiommathai that kicks off a broader project of formalization in economics.

Aumann's celebrated theorem says we can't "agree to disagree."

But what does that actually mean – formally? 👀

[Gro-Tsen @gro_tsen]

Let me publicly express my exasperation with people who write math papers giving a non-obvious definition of something, and don't take the time to explain what would have happened if you had taken the “obvious” or “naïve” definition. 🧵⤵️ •1/19

[David Meyer @dajmeyer]

.@MackinSolomon, Bishop’s School team wins national title in American Rocketry Challenge https://t.co/TrjEbDo8DZ
"Because the students intend to compete again, they did not disclose the specifics of their system."

[Shannon Seban @ShannonSeban]

Quand la victoire d’un match de foot sert de prétexte aux casseurs, au palestinisme et à l’antisémitisme, le résultat n’a plus rien de sportif.
ASSEZ.

Rétablir l’ordre : notre priorité avec
@BrunoRetailleau @lesRepublicains.

[Tom Loveless @tomloveless99]

I think the opposite. Basic skills will increase in value because they are foundational to content knowledge in all domains. Basic skills have been declared "dead" many times over the past century--typically by ed progressives--but as the world grew more complex, and tech more able, the premium for knowledge increased.

[David Meyer @dajmeyer]

@eciotti .@PSG_inside : Paris : 2026 :: @DetroitPistons : Detroit : 1990 https://t.co/rQYQxhQw1S

[David Meyer @dajmeyer]

@DavidSandersRep @NIH @NIHDirector_Jay Yes, it is.

[David Meyer @dajmeyer]

Ginexi, Why Is the @NIH Abandoning Science? https://t.co/iftXrPVXSz "This is not efficiency. This is not streamlining. This is the systematic elimination of scientific stewardship at the world’s largest biomedical-research funder."
Fix this, @NIHDirector_Jay!

[David Meyer @dajmeyer]

@KatherineMangan Why quote @PamelaBurdman w/o pointing out that the CA higher ed system includes community colleges, the Cal state schools, and @UofCalifornia, each intended for *any* CA student who is *prepared* to thrive in it, nor that no one is calling for a "singular focus" on the SAT?

[David Meyer @dajmeyer]

Just broke 1000 signatures! 1001 = 7 x 11 x 13

[David Meyer @dajmeyer]

Faculty letter to @UofCalifornia administration calling to reinstate SAT/ACT scores for applicants: "a common external check that students have the core mathematical fluency required for university-level STEM coursework" https://t.co/69d9gTsd8i
281 signatures & counting ...