🌿🍺 A small flower. A huge impact. For over 1000 years, #hops have transformed #beer - adding bitterness, aroma, stability, and helping shape many of the world's most influential beer styles. Explore the **Hops** storyline on Beer Chronicles: 🔗 beer-chronicles.org?tags=Hops

🏺🍺 Beer history is far older than most people think. The **Early Beer History** storyline on Beer Chronicles traces brewing from some of the earliest archaeological evidence to medieval monasteries—connecting thousands of years of brewing history. 🔗 beer-chronicles.org?tags=Early+B...

🍺 Beer Chronicles has grown to **430+ entries**. More importantly, it has become a network of connected beer histories. Explore the stories of IPA, wheat beer, Trappists, homebrewing, porter, hops, yeast, and much more—all connected in one interactive timeline. 🔗 beer-chronicles.org

That's a nice start into the new week: Our paper "On Coupling Constraints in Pessimistic Linear Bilevel Optimization" (with D. Henke, @hlefebvr.bsky.social & J. Thürauf) is now published in JOTA. It's open access; go for it: link.springer.com/article/10.1...

On Coupling Constraints in Pessimistic Linear Bilevel Optimization - Journal of Optimization Theory and Applications

The literature on pessimistic linear bilevel optimization with coupling constraints is rather scarce and it has been common sense that these problems are harder to tackle than pessimistic bilevel prob...

link.springer.com

🍺 New Trappist entries are now live on Beer Chronicles. Abbeys, brewing traditions, protected names, iconic beers — and a story where beer, place, faith, discipline, and identity are deeply connected. Explore the Trappist beer-history rabbit hole at beer-chronicles.org?tags=Trappists.

🍺 35 IPA entries are now live on Beer Chronicles. From pale malt and Burton-on-Trent to American craft beer, Double IPA, NEIPA, and Cold IPA. One style. Many chapters. A very deep beer-history rabbit hole. Explore it at beer-chronicles.org?tags=IPA.

Centrum Wiskunde & Informatica (CWI) joins #ISMP2027 as a diamond sponsor! We are grateful for CWI's support of the 26th International Symposium on Mathematical Programming. 🗓️ July 25–30, 2027 📍Amsterdam 🔗 ismp2027.mathopt.nl #MathematicalProgramming #OperationsResearch #Optimization #MOS

Season 1 of the #BOS #Webinar Series is in the books! Thanks to all speakers and everyone who joined! 🎥 All recordings will be available on YouTube: www.youtube.com/@BOSWebinar 🗓️ Season 2 starts on September 1, stay tuned for the program! 🔗 More information: bileveloptimization.org/bos_webinar

🇦🇹🍺 On my way to Vienna — perfect timing: The new Vienna Lager entry is now live on Beer Chronicles. 19th-century brewing history, Anton Dreher, lager technology, and one of Europe’s great amber beer traditions. Explore it at beer-chronicles.org?tags=Vienna+...

🍺 New on Beer Chronicles: You can now share direct links to filtered views. Filter by category, tags, years, or search terms — and the link remembers exactly what you selected. Perfect for sending someone into your favorite beer-history rabbit hole. Example: beer-chronicles.org?from=1600&ta...

Tiny UX update on beer-chronicles.org 🍺 You can now switch the timeline order more clearly: ↓ Newest first ↑ Oldest first Want to jump straight into the latest additions? Go newest first. Want to travel through beer history from the beginning? Go oldest first. #BeerChronicles #BeerHistory

My tiny side project got a new UX update: Search beer history. Instantly. New on Beer Chronicles: full-text search across all event titles and descriptions. Find what you're looking for in seconds. 👉 beer-chronicles.org #beerchronicles #beer #history #timeline #beerfacts #craftbeer #UXUpdate

The recording and the slides of our latest #BOSWebinar with Didier Aussel are available! 🎥 Recording: youtu.be/TSelremyljc?... 📄 Slides: bileveloptimization.org/bos_webinar/... 🔗 More information on the #BOS Webinar Series: bileveloptimization.org/bos_webinar/ #Bilevel #BilevelOptimization

Multi-Leader-Follower games without Nash equilibrium interactions

YouTube video by Bilevel Optimization Society Webinar

youtu.be

Great start into the new week! Our paper "Computational Methods for the Household Assignment Problem" (w Ulf Friedrich, Lucas Moschen & Ralf Münnich) has today been accepted for publication in MMOR. The final version of the preprint is still available at Optimization Online: tinyurl.com/y2p2r6t5

Join us for the last session of the #BOSWebinar before the summer break! The session on June 23 at 4 PM CEST will feature two 20-minute talks by Sebastian Vasquez and Noah Weninger. 🔗 More information on the #BOS #Webinar series can be found at: bileveloptimization.org/bos_webinar #Bilevel

🍻 Beer Chronicles now has a Community category. Local festivals, their winners, rating apps, etc. – events and tools that celebrate the people behind beer culture. 👉 beer-chronicles.org #BeerHistory #Community #CraftBeer #BeerChronicles

🍻 I'm excited to announce that my Beer Chronicles is now live! An interactive timeline of beer history from 1000 to today – with filters for styles, breweries, laws, & more. 👉 beer-chronicles.org 130+ events & counting. Feedback very welcome. #beerhistory #craftbeer #beertimeline #brewinghistory

As usual - there are good and bad news: When do Mixed-Integer Games Admit Rational Equilibria? (jointly with Aloïs Duguet, Tobias Harks, and Julian Schwarz). Ready for reading at tinyurl.com/473t27ea!

Rügen. Kap Arkona. Germany. Summer 2020. Long exposure, dramatic sky, the Baltic sea pulling itself flat. Chaos turning into stillness — that's why I love this kind of photography. Same COVID summer. Same tripod. Different sea. 📷 #longexposure #seascape #balticsea #rügen

Join us today at 4 PM CEST for the next #BOSWebinar with Didier Aussel! 🔗 More information on the #BOS Webinar Series and upcoming talks can be found at: bileveloptimization.org/bos_webinar #MathematicalProgramming #SLMF #MLMF #BilevelOptimization #MOS

Yasmine Beck@yasminebeck.bsky.social · 2mo ago

Don't miss the next #BOSWebinar on June 9 at 4 PM CEST, featuring a 40-minute presentation by Didier Aussel. 🔗 bileveloptimization.org/bos_webinar 📩 Details will be shared via the BOS mailing list. Not a #BOS member? Register for free at bileveloptimization.org/membership! #BilevelOptimization

Don't miss the next #BOSWebinar on June 9 at 4 PM CEST, featuring a 40-minute presentation by Didier Aussel. 🔗 bileveloptimization.org/bos_webinar 📩 Details will be shared via the BOS mailing list. Not a #BOS member? Register for free at bileveloptimization.org/membership! #BilevelOptimization

🎥 The recordings of our last #BOSWebinar with Bo and Sadegh are now available to rewatch on our YouTube channel: 🎙️ Bo Lin: youtu.be/U75v_IkLxd4?... 🎙️Mohammad Sadegh Salehi: youtu.be/G1LUtJd8FDU?... #MOS #MathematicalProgramming #Bilevel #BilevelOptimization #BOS

Some more theoretical food for thought on #bilevel #optimization: Calmness of the Solution-Set Mapping for Linear Bilevel and Pricing Problems Jointly with @hlefebvr.bsky.social, Anton Svensson, and Johannes Thürauf) is now available at tinyurl.com/39p9mcd8! #orms @unitrier.bsky.social

The next #BOSWebinar takes place on May 26 at 4 PM CEST, featuring two 20-minute talks by Bo Lin and Mohammad Sadegh Salehi. 📩 Details will be shared via the #BOS mailing list. Not yet a BOS member? Register for free at bileveloptimization.org/membership. 🔗 bileveloptimization.org/bos_webinar

The material will be published by Cambridge University Press as "Linear and Mixed-Integer Bilevel Optimization: Theory and Algorithms" by Yasmine Beck, Ivana Ljubić, and Martin Schmidt. This pre-publication version is free to view and download for personal use only.

This book brings together years of work on bilevel optimization, covering theoretical foundations and algorithmic developments, with a focus on linear and mixed-integer settings. In 18 chapters, we provide a self-contained introduction to the field, bridging theory with modern algorithmic methods.

📚 Excited to share the pre-publication PDF of our book Linear and Mixed-Integer Bilevel Optimization: Theory and Algorithms (with Ivana Ljubić and @schmaidt.bsky.social), which is now in production with CUP. 🔗 You can access it at yasminebeck.github.io/files/bileve... #BilevelOptimization #BOS

🎥 The recording of our latest #BOS Webinar with Miguel Anjos is now available on YouTube! You can rewatch his talk here: www.youtube.com/watch?v=dg8e... 🔗 More information on the BOS Webinar Series: bileveloptimization.org/bos_webinar/ #Bilevel #Optimization #BilevelOptimization #MOS

In 2 Wochen Trier: Biertasting im Blesius Garten. Regionale Biere + Homebrews der Brewderschaft Trier. Ich: mit Cream Ale – selten in DE, zwischen American Lager & Pale Ale, mit Maisflocken. Heute erstmals probiert. Wird gut. Tickets: tinyurl.com/3suytvhf #craftbeer #homebrewing #creamale

Photography has been quiet here for too long. Beer, sourdough, brewing took the spotlight – but not this. Back to 2020. COVID. A short travel window in Germany. Mecklenburger Seenplatte – Plau am See. Tripod out. Filters on. Just shoot. #photography #travel