📣 New paper! "Delegate Pricing Decisions to an Algorithm? Experimental Evidence" with @normann.bsky.social, Nina Rulié, & @ostypa.bsky.social We study what happens when humans delegate to a collusive algorithm, and AI pricing adoption becomes a strategic choice! arXiv: arxiv.org/abs/2510.27636

@normann.bsky.social #HHULehrpreis2025

Stronger together - support for 🇺🇦 from private individuals, coordinated with @oechssler.bsky.social: 200 people gave at least 200€. Combined with extra donations, the total is about 60.000€. The money is already in Ukraine. Thank you! yourcontributionsquared.eu

🤝 An der MathNat-Fakultät, direkt am Gebäude 25.12, ist nun das bekannte Banner mit der Botschaft „Wissenschaft braucht Demokratie. Demokratie braucht Wissenschaft.“ zu sehen. 1/3

Strong show of support for 🇺🇦 on the first day of yourcontributionsquared.eu/en Six days to go, to coordinate donation pledges Please consider passing the link on to others, also outside of Bluesky

Sometimes, the timing just works out: Tomorrow, I’ll be discussing the concept of zero-sum and non-zero-sum games in a lecture. This article fits perfectly, so we’ll read it together. That probably means we’ll watch fewer videos of Hollywood movies featuring 'Chicken'—so, a bit less 🍿🍿 😉 #TeachEcon

Wirklich sehenswert.

📉📈 Deep Q-learning of prices in oligopolies: the number of competitors matters https://www.sfb1283.uni-bielefeld.de/preprints/sfb24074.pdf "…whereas in a duopoly setting DQNs might lead to prices very close to the monopoly level, the supra-competitive #pricing resulting from the … 1/4

This article should be required reading for anyone commenting on the political effects of social media.

📢 New CRC Discussion Paper #EconSky Dirk Engelmann, Jana Friedrichsen, @roelonthehill.bsky.social, Pauline Vorjohann, Joachim Winter decompose trust into key components and find beliefs to be a main driver, and risk preference to be more relevant than social preferences. A 🧵 1/4

A new long-run effort - fingers crossed!

I consider this one of the most important parables to come out of Twitter’s existence

Last week, Ariel Ezrachi was at our Düsseldorf law faculty as the 1st Visiting Professor 👨‍🏫 . We had several events, but what I loved most was his inspiring discussion with my students in the #antitrust class. (I was a bit proud of them.) Thanks, Ariel! @hhu.bsky.social

Klimapolitik: Der deutsche Kohleausstieg verpufft www.faz.net/aktuell/wirt... #fplus