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Pierre Nyquist

@pierrenyquist.bsky.social

410 followers 160 following 77 posts

Assoc. prof. in mathematics at Chalmers/University of Gothenburg. Mainly probability, analysis and computational methods, but I like to visit most areas of mathematics. Elected member Young Academy of Sweden. Mostly here for the science, some for the jokes

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Pierre Nyquist @pierrenyquist.bsky.social · Dec 15

🚨New PhD position 🚨
I have at least one PhD opening, starting fall 2025 (later might also be possible), to work on topics in probability theory. Official ad is out on Dec 20, in the meantime there is more information on my webpage—interested students are welcome to contact me. Spread the word!

Pierre Nyquist | Chalmers & Gothenburg University

Pierre Nyquist's homepage

pierrenyq.github.io

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Pierre Nyquist @pierrenyquist.bsky.social · Sep 6

Yes, it is a bit insane when you try to explain it to people from other fields. We finally did manage to get an "update": they can't get a hold of the editor, so why don't we please help them and send an email as well...

Pierre Nyquist @pierrenyquist.bsky.social · Sep 3

Roughly 5 months later, can you guess what email I had to write once more?

Pierre Nyquist @pierrenyquist.bsky.social · Apr 4

Currently writing an email to an editor asking when we can expect reports on a paper we submitted in one of my students first year. She is defending her thesis in two months; we have 5 year PhD programs.

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Reposted by Pierre Nyquist

Steve McCormick @quasilocal.com · Aug 30

Anyone in the math GR / geometric analysis communiy know anyone who's in need of a postdoc around 1 year from now and would be interested in coming to the frozen wastelands of the north? (And has/will have a non-Euro PhD)

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Pierre Nyquist @pierrenyquist.bsky.social · Aug 26

Whenever I talk broadly about research topics, I will catch myself saying "I dislike the distinction between pure and applied math...." and then have to explain that actually no, I am fine with it but reject the often implicit statement that one is better than the other.

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Pierre Nyquist @pierrenyquist.bsky.social · Aug 21

New opinion piece on the Swedish AI commission’s report and proposals, from @sverigesungaakademi.se

Försvaga inte det som ger AI dess styrka

DEBATT: Sverige har allt som krävs för att leda AI-utvecklingen: stark forskning, digital infrastruktur och en tradition av teknisk utveckling. AI kan göra mycket nytta, men bara om vi satsar på rätt ...

www.di.se

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Pierre Nyquist @pierrenyquist.bsky.social · Aug 19

Re-reading this gem more than a decade after the first time. Great for beginning students as the similarities with,
and lessons for, research are everywhere. Or just life in general really.

Pierre Nyquist @pierrenyquist.bsky.social · Aug 18

The obvious addendum to this is that it is most likely also the way grad students—probably uniformly applicable—feel hearing me talk about joint work. And this direction is far more likely to be accurate/valid.

Pierre Nyquist @pierrenyquist.bsky.social · Aug 18

Indeed, reading the first few lines, the only thing I could think of was “this is like listening to a talk by your grad student” (albeit not uniformly applicable)

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Pierre Nyquist @pierrenyquist.bsky.social · Aug 12

100% here for this.

Ben Recht @beenwrekt.bsky.social · Aug 12

Since it's 5 PM here, let me follow up this post with my top 10 negroni variations.

Ben Recht @beenwrekt.bsky.social · Aug 11

Revisiting Sutton’s Bitter Lesson in the wake of GPT-5.

Pierre Nyquist @pierrenyquist.bsky.social · Jul 10

Making a list of papers to bring on upcoming trips, mostly things that are not in my "main areas"—any suggestions for good papers from the last couple of years? Any suggestions welcomed; so far I have *a lot* on the overlap gap property and computational hardness (Gamarnik, Ben Arous and others...)

Pierre Nyquist @pierrenyquist.bsky.social · Jul 4

Non-issue as in any math/cs/... dept will likely see more egregious "style crimes" any given day of the week. Similarly to you, I have also been asked about wearing a suit, when at the same time mid-winter others were walking around in shorts and sandals.

Pierre Nyquist @pierrenyquist.bsky.social · Jul 4

I am entirely in the suits/jackets camp. I couldn't do the boots myself but given what people—I almost wrote "the kids"—are wearing these days, having cowboy-ish boots with suits, or generally with more-than-average formal clothes, seems like it should be a non-issue.

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Pierre Nyquist @pierrenyquist.bsky.social · Jun 30

And we’re off! Great start but as usual too many interesting talks/sessions. And, of course, the heat. But, first world problems and all that…

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Pierre Nyquist @pierrenyquist.bsky.social · Jun 29

Took less than 10min from the airport and we’re in the gridlock of all gridlocks. Good to see the traffic people were warning me about 10 years ago has *not* improved

Pierre Nyquist @pierrenyquist.bsky.social · Jun 28

Spending most of the week in Atlanta, anyone with rec's for where to go for food, drinks etc?

Pierre Nyquist @pierrenyquist.bsky.social · Jun 26

Chasing characters to remove in a "paper" for a class on pedagogy and it is a real "kill your darlings"-situation over here

Reposted by Pierre Nyquist

John T Ormerod @johntormerod.bsky.social · Jun 17

Waiting for my MCMC to finish.

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Pierre Nyquist @pierrenyquist.bsky.social · Jun 10

As an example where this is useful, we consider Schrödinger bridges where the reference measure comes from that of a (scaled) reflected Brownian motion. It remains an open question what types of sequences of cost functions, or equiv. reference measures, one can consider and still have an LDP.

Pierre Nyquist @pierrenyquist.bsky.social · Jun 10

entropic optimal transport. Specifically, we extend their results to cover also cases where you have a sequence of cost functions that converge in the right way (here, uniformly) to a limiting cost function. It then turns out that an LDP holds for the corresponding sequence of Schrödinger bridges.

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Pierre Nyquist @pierrenyquist.bsky.social · Jun 10

🚨New work alert🚨
This got a little lost with Federica's defence last week, but together with another student with put out a new preprint on large deviations for certain families of Schrödinger bridges. The work builds on that of Bernton, Ghosal and Nutz for ...

arxiv.org/abs/2506.03999

Large deviations for scaled families of Schrödinger bridges with reflection

In this paper, we show a large deviation principle for certain sequences of static Schrödinger bridges, typically motivated by a scale-parameter decreasing towards zero, extending existing large devia...

arxiv.org

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Pierre Nyquist @pierrenyquist.bsky.social · Jun 6

Even managed to get a picture of four generations of the academic tree. Lots of large deviations and control-ish work in one photo.

Pierre Nyquist @pierrenyquist.bsky.social · Jun 5

And with that, we welcome Federica to the PhD family! A wonderful defence steered in a fantastic way by Christophe Andrieu as opponent and w. Sigrid Källblad from KTH as chair.

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Pierre Nyquist @pierrenyquist.bsky.social · Jun 4

T-24h until Federica's PhD defence. I have somehow fallen into the role of event planner leading up to this; zero nerves about the actual defence, but stressed out of my mind about travel itineraries, directions and Google Maps links, restaurant reservations etc.

www.kth.se/math/kalende...

Large Deviation Analysis of Markov Chain Monte Carlo Methods and Algorithmic Advances for Uncertainty Quantification in Neuroscience | KTH

www.kth.se

Pierre Nyquist @pierrenyquist.bsky.social · Jun 3

Quintessential academic experience: finished a referee report I had been putting off for way too long earlier today. 20 min later a new referee request comes in, aaaaaaand now we’re back where we started.

Pierre Nyquist @pierrenyquist.bsky.social · May 13

It happens every time and yet I seem to forget between visits: coming to Brown and talking to the people here gives me such a boost of ideas and new problems to work on. Cannot overstate the influence this place has had for me.

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