Jim Luedtke

these are my suggestions for what to do

William has good takes

New internship + PhD offer on optimization and transportation, fully funded! Come work with us at the intersection of fun questions and important challenges!

🚨 EARLY VOTING STARTS TODAY IN WISCONSIN 🚨

I Wrote about the responsibility we carry to each other.

Wow, so happy to see so many friends honored as INFORMS Fellows this year!

Congratulations to the newly elected @informs.bsky.social Fellows www.informs.org/News-Room/IN... I have been sending individual congratulations messages and look forward to the celebration at the #INFORMS Conference at the Fellows Lunch in San Fran in early November!

When I say "this is not good" let me be more specific: (1) this is not good for academia (destroying the current system before it has a chance to reassess its incentive structure), (2) it is not good for science (flooding the gates with ill-understood results and insightless or badly written proofs)

This is the trailer that all the major platforms refuse to run as a paid ad:

We're all having such a bad time

Happy #ISEDay! Today we celebrate industrial and systems engineering and the students, faculty, alumni, and partners who shape the field. ISE Day is a global movement empowering the community and highlighting the impact of the discipline. #ISEDay2026

AI is ravenous and is eating mathematicians' lunch. A long-standing problem is solved, others are in its sights. But is this more than just a problem about problems? Here's Fields Medallist James Maynard. Read the Math and AI Declaration by 25 Fields Medallists: mathandai.org

Children with medical disabilities deserve basic dignity and support at school. But private schools receiving public dollars can deny this 7 year old accommodations & push him out. We are publicly funding schools without requiring them to accept the public obligations that come with the money.

For the record: $22 million is ~70 math.PR grants from NSF’s MPS division. Each for 2 collaborators, gives 1 month summer salary, supports 1 grad student for its length: 2 yrs. That’s 140 years: In 7, I can promise substantial progress on SL/Parisi, PHA papers (1-6), PF/SYK<->SYK & quantum p-spin.

Published today! Our article in Math Horizons about how Robert and I lied to players for three years in our game Digit Party, and how we used integer linear programming to stop.

And I just renamed Lake Michigan Lake Wisconsin. See, I can sign napkins that say things, too.

Very sad to hear this news

Some children in Dilley were so distraught they cut themselves or talked about suicide, parents told ProPublica. They said kids lost their appetites after finding worms and mold on their food, had trouble sleeping, and were constantly sick. (Published February)

I feel like I'll be coming back to this a lot...

I understand that funding bodies want to go all in on AI as the shiny new innovation thing. But if all the grants start going to AI at the expense of everything else then the research sector is going to end up looking like a farm with dozens of threshers hacking away in a field with no wheat.

"Prediction Markets Let You Bet on Whether a Wildfire Will Burn Down Your Town" www.wired.com/story/predic...

Today is the first day of early, in-person absentee voting in Wisconsin for the Aug. 11 partisan primary. The big race is the Democratic primary for governor, but there are many more up and down the ballot where you may have an important choice to make. Be prepared: myvote.wi.gov/en-us/Whats-...

Longterm, meticulous science 1970s mutation identified 2000s lentiviral vectors made reliable 2012 CRISPR makes editing feasible 2017 first durable lentiviral cures 2020 first CRISPR‑edited SCD patients 2023–24 first approved gene‑addition & CRISPR cures pmc.ncbi.nlm.nih.gov/articles/PMC...

We're hiring! Now seeking teaching faculty/professor candidates for fall 2026. Spread the word or apply now! go.wisc.edu/936yf2

📢 Travel discount for #ISMP2027 participants Benefit from a 10% discount on Air France and KLM flights: ismp2027.mathopt.nl/img/travel/f... ✈️ Reservations: July 25, 2026 – July 30, 2027 ✈️ Departures: July 18–30, 2027 ✈️ Returns: July 25, 2027 – August 6, 2027 🔗 ismp2027.mathopt.nl #MOS

A legend, an icon and a trailblazer.

I'm excited to share some joint work done with TaeHo Yoon. We considered algorithm design for fixed-point problems. This area models gradient descent, minimax optimization, and more. Below, I give the wild ride of this paper. Mathematically, it is gorgeous.

the president is raiding the treasury to put your tax dollars into this mans personal checking account as a reward for what hes doing in this picture

Can machine learning improve discrete optimization algorithms without sacrificing theoretical guarantees? This was the central question of the talk I gave this spring at a few schools (UCSD, UIC, Yale, Penn): Machine Learning for Discrete Optimization: Theoretical Foundations. (🧵 1/7)

Mathematical Optimization, Full Professorship (W2) @rwth.bsky.social areas: continuous, stochastic, discrete optimization, convex/non-convex analysis, variational methods, non-smooth/set-valued analysis, optimal control, and/or inverse problems #orms berufungsportal.rwth-aachen.de

Attention all PhD students and postdocs approaching the academic job market, and especially those not in business analytics departments: the application deadline for the FutureBAProf is April 30! tippie.uiowa.edu/news-events/...

PUB. DAY! Fear of the False: Forensic Science and the Law of Crime in Colonial South Asia is officially out today. Available Open Access: www.cornellpress.cornell.edu/book/9781501... #legalhistory Outfit: red for bloodstain testing+flowered shirt for botanical poisons+poisoner's ring (for show only)

REMINDER: Wisconsin has same-day voter registration. So, if you haven’t registered or recently moved or anything like that, you can register at your polling place (with ID and proof of residence) TODAY. Every state should do this. It’s great that Wisconsin does this. Go vote.

The recording of my talk at University of Wisconsin-Madison is now online: m.youtube.com/watch?v=zL3n... Thanks again @optimizer.bsky.social, @jefflinderoth.bsky.social, @lauraalbertphd.bsky.social, @madsjw.bsky.social, and all other Badgers!

📢 Semi-Plenary Speakers for #ISMP2027! We are pleased to announce the semi-plenaries for the 26th International Symposium on Mathematical Programming. Join them to explore advances, challenges, and opportunities in mathematical optimization. 🗓️ July 25–30, 2027 📍Amsterdam 🔗 ismp2027.mathopt.nl #MOS

I am happy to share my latest work ``Folding Mixed-Integer Linear Programs and Reflection Symmetries'', where I formulate two new presolving techniques for handling symmetries in linear programs and mixed-integer linear programs. Check out the preprint here: lnkd.in/efgYeVSJ lnkd.in/eGpim7U9

Thanks for all the OptiBeer @optimizer.bsky.social @jefflinderoth.bsky.social and for the OptiWine @lauraalbertphd.bsky.social Heading back to Corn Land from Dairy Land after a day packed with very interesting research discussions

It’s an incredible honor to be a plenary speaker at #ISMP2027 alongside these amazing optimizers. I look forward to seeing all my optimization friends in Amsterdam!

There are many things about preparing and presenting slides that I keep repeating to students, so I figured that I should put them down in writing. I do think that they help a lot. (And if I am doing it, why not share it more broadly?) thiagoserra.com/2026/03/03/m...

Saving peer review from AI slop requires getting rid of anonymous submissions and reviews togelius.blogspot.com/2026/03/savi...

Come see me speak about the new era of simplex method theory. Wednesday!

Mark your calendars and start optimizing your resources and schedules: the 2027 International Symposium on Mathematical Programming will be held from July 25 to to 30 in beautiful Amsterdam! Neil Yorke-Smith and I will organize the stream Discrete Optimization with Machine Learning. #ismp2027

📢 #ISMP2027 comes to Amsterdam! The 26th International Symposium on Mathematical Programming will be held July 25–30, 2027. Join researchers from around the world to discuss advances, challenges, and opportunities in the theory and practice of mathematical optimization. 🔗 ismp2027.mathopt.nl #MOS

And... we are back on 🎉! The first talk of the season will be delivered by Sophie Huiberts (CNRS, @sophie.huiberts.me), on ⏰ March 4 (10am PT, 1pm ET, 19:00 CET): "Analyzing the Simplex Method by the Book" RSVP to receive the link (one day before the talk): forms.gle/aD621bCwswjB...

Have you noticed how navigation apps include walking & waiting for public transit, but excludes parking & walking for driving? After being late a few times 😅, we finally did. We got curious: what if these apps account for parking?

Question for #orms people: do you know any problem-specific cutting planes that are not too hard to explain and separate and would improve performance compared to a baseline MIP solver (e.g. SCIP, Gurobi)? Asking because its more fun for students if they implement something and it helps performance

our #openaccess book on "branch-and-price" is finally published; you can download it here link.springer.com/book/10.1007... #orms @springernature.com

1/ ProPublica collected handwritten letters in mid-January from children held at the Dilley Immigration Processing Center, the same facility where 5-year-old Liam Conejo Ramos was taken. Hundreds of kids are still detained. We’ll let the children’s words speak for themselves. 🧵

📣 𝗣𝗼𝘀𝘁𝗱𝗼𝗰 𝗼𝗽𝗲𝗻𝗶𝗻𝗴𝘀 𝗶𝗻 𝗺𝘆 𝗴𝗿𝗼𝘂𝗽! I’m looking to hire 𝟭–𝟮 𝗽𝗼𝘀𝘁𝗱𝗼𝗰𝘀 to work with us across the group’s research areas, including: 🤖 Deep reinforcement learning 🚦 Traffic modeling & control 🧠 Neural combinatorial optimization