Author | Lightnews

Martin Schmidt @schmaidt.bsky.social · 3d

This was hard work but now we are happy!

The #BOBILib paper has today been accepted for publication in Mathematical Programming Computation!

Here's the final version of the preprint: optimization-online.org/wp-content/u...!

And here's the website bobilib.org!

Spread the word and use it! :-)

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Martin Schmidt @schmaidt.bsky.social · 8d

Thanks for having us! Again, it was a pleasure!!

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Reposted by Martin Schmidt

EUROYoung Forum @euroyoung.bsky.social · 9d

The 5th EUROYoung Workshop started yesterday! We were amazed by the incredible talk given by our first plenary speaker, @schmaidt.bsky.social #EUROYoung2025 #orms

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Martin Schmidt @schmaidt.bsky.social · 9d

Thanks a lot for the invitation! It was and is a great pleasure!

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Martin Schmidt @schmaidt.bsky.social · 19d

German News Wrap-Up:

„Wir verschieben die Debatte, weil wir uns nicht einig sind!“

Es grüßt der demokratische 💀

oh boy …

Martin Schmidt @schmaidt.bsky.social · 25d

SCHMAIDT'S NERD BREWING presents ... VIENNA CALLING (Beer Festival Trier 2025 Edition)

A bit more than a week to go!

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Martin Schmidt @schmaidt.bsky.social · Sep 20

Once upon a time in Stockholm‘s underground.

Let’s continue this series of metro station #photos from #sweden with Solna Centrum Station!

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Martin Schmidt @schmaidt.bsky.social · Sep 20

You want to learn about Equilibrium Problems à la Nash, Stackelberg, Arrow & Debreu, ...? Then join us at the

TRR 154 AUTUMN SCHOOL ON
EQUILIBRIUM PROBLEMS

www.trr154.fau.de/autumn-schoo...

TRR154 Autumn School 2025

Your browser does not support HTML5 video. TRR 154 Autumn School on Equilibrium Problems November 5 - 7, 2025Berlin ...

www.trr154.fau.de

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Martin Schmidt @schmaidt.bsky.social · Sep 13

Once upon a time in Stockholm‘s underground!

A series about the #Stockholm metro stations was on my #photography todo list since 2022 when I was in this wonderful capital of #Sweden for the first time!

This year, I finally found the time and here‘s the #photo of the first stop: #Akalla!

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Martin Schmidt @schmaidt.bsky.social · Sep 4

@yasminebeck.bsky.social is continuing her PhD-prize-collecting conference tour!

This time the PhD prize of the German OR society!

Congratulations! 💪

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Martin Schmidt @schmaidt.bsky.social · Sep 2

Once upon a time in #Stockholm, #Sweden

Why not posting some old but unpublished shots from Stockholm while being in Stockholm again?

#travel #travelphotos #blue #hour #bluehour #cityscape #gamlastan #wideformat #night #photography #nightphotography #travelphotography #travelphoto #scandinavia

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Martin Schmidt @schmaidt.bsky.social · Aug 22

You want to use the BOBILib (bobilib.org) instances to test your new bilevel optimization solver?

And you don't want to code your own parser?

No problem, use this one: gitlab.uni-trier.de/nlopt/mps-au...!

BOBILib: Bilevel Optimization (Benchmark) Instance Library

bobilib.org

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Martin Schmidt @schmaidt.bsky.social · Aug 21

Once upon a time in Lausanne, Switzerland!

#travel #blackwhite #blackwhitephotography #blackandwhite #lausanne #suisse🇨🇭 #suisse #schweiz #switzerland

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Martin Schmidt @schmaidt.bsky.social · Aug 11

Spread the word! 👍

Martin Schmidt @schmaidt.bsky.social · Aug 11

Final deadline extension for the

International Workshop on Algorithmic Optimization

at @unitrier.bsky.social, Germany, which takes place

September 23-26.

Registration is open until Friday, August 15! Don't miss it!

alop.uni-trier.de/event/intern...

International Workshop on Algorithmic Optimization | ALOP

alop.uni-trier.de

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Martin Schmidt @schmaidt.bsky.social · Aug 10

Motivated by today's US NEIPAs I wanted to have some grassy notes & dankness. I don't want to say that this is the masterpiece of dankness for sure, but I think it goes into the right direction.

#homebrew #brewing #nerd #brew #craft #beer #craftbeer #NewEnglandIPA #IPA #neipa #hazyipa #hazy

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Martin Schmidt @schmaidt.bsky.social · Aug 10

SCHMAIDT'S NERD BREWING ... proudly presents ... HOLLE'S SUMMER JUICE 2025

I am slowly getting to where I want my New England IPA journey to head to. A bright-yellow-milky-hazy appearance, a stable and super-white head.

#homebrew #brewing #brew #craft #beer #craftbeer #IPA #neipa #hazyipa #hazy

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Martin Schmidt @schmaidt.bsky.social · Aug 2

I like it. And I will come back for sure when the construction crane is gone 🙄

#Zurich #travel #photography #travelphotos #switzerland #bluehour #goldenhour #cityscape #Zürich #Schweiz

More on www.schmaidt.de!

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Martin Schmidt @schmaidt.bsky.social · Aug 2

Once upon a time in Zurich!

I don’t know why but I ignored the country for far too long. But this year, I had the chance to visit Switzerland 🇨🇭 twice and Zurich once.

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Martin Schmidt @schmaidt.bsky.social · Jul 25

Once upon a time at Lac Leman, #switzerland🇨🇭 ...

A beautiful #lake with beautiful light. #Photo taken in March 2025.

#lake #light #clouds #blackwhite #blackandwhite #blackandwhitephoto #blackwhitephotography #landscape #seascape #mountains #switzerland #schweiz #travel #travelphoto #roadtrip

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Martin Schmidt @schmaidt.bsky.social · Jul 23

More of such #photography stuff on www.schmaidt.de!

Martin Schmidt @schmaidt.bsky.social · Jul 23

Once upon a time in #Annecy

For sure one of the most positive surprises in our #travel life so far — a beauty with a nice old town, #mountains, a beautiful #lake, good restaurants, and even some nice #craftbeer pubs 😉

#france #france🇫🇷 #travel #travelphoto #street #photography #streetphotography

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Martin Schmidt @schmaidt.bsky.social · Jul 18

Once upon a time in Zurich, Switzerland

The Negrellisteg was on my #photography todo list since quite some time. This year, I was finally able to capture it!

More of such stuff you'll find at www.schmaidt.de.

#photo #traveling #travel #Zurich #Zürich #Switzerland #Schweiz #architecture

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Martin Schmidt @schmaidt.bsky.social · Jul 16

Yet another paper alert: Our paper "Mixed-Integer #Bilevel Optimization with Nonconvex Quadratic Lower-Level Problems: #Complexity and a Solution Method" (jointly with Immanuel Bomze and Andreas Horländer) is published in the Journal of Global #Optimization.

link.springer.com/article/10.1...

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