Erling D. Andersen
@primaldual.bsky.social
I spend most of my adult life on convex optimization and www.Mosek.com. In my spare time I like riding my racing bike and follow www.ob.dk.
ORCID: https://orcid.org/0000-0001-6351-8761
ORCID: https://orcid.org/0000-0001-6351-8761
Reposted by Erling D. Andersen
Kicking off 2026, here is a new list of summer schools on artificial intelligence, data science, machine learning, and operations research:
thiagoserra.com/2026/01/04/s...
thiagoserra.com/2026/01/04/s...
Summer 2026 schools on artificial intelligence, data science, machine learning, and operations research
The purpose of organizing this list is to help graduate students find a summer school to gain skills related to operations research. Why? Because students are often unaware of those, whereas facult…
thiagoserra.com
January 4, 2026 at 10:20 AM
Kicking off 2026, here is a new list of summer schools on artificial intelligence, data science, machine learning, and operations research:
thiagoserra.com/2026/01/04/s...
thiagoserra.com/2026/01/04/s...
Highly informative discussion.
With David Frum on Venezuela, spheres of influence, and the deeper implications of Trump's foreign policy
www.youtube.com/watch?v=5oSR...
www.youtube.com/watch?v=5oSR...
Bonus Episode: How Is Trump Planning to ‘Run’ Venezuela? (With Anne Applebaum) | The David Frum Show
YouTube video by The Atlantic
www.youtube.com
January 4, 2026 at 9:17 AM
Highly informative discussion.
So the recipient of the FIFA Peace Prize is bombing Venezuela.
January 3, 2026 at 8:07 AM
So the recipient of the FIFA Peace Prize is bombing Venezuela.
Reposted by Erling D. Andersen
Hvad ville vi være uden hinanden? Godt nytår til jer alle!
December 31, 2025 at 4:26 PM
Hvad ville vi være uden hinanden? Godt nytår til jer alle!
Reposted by Erling D. Andersen
Reposted by Erling D. Andersen
“Why are folks getting dumber?” Because they don’t read. “Why aren’t men as romantic & poetic as they used to be?” Because they don’t read. “Why are people so vulnerable to propaganda?” “Why is everyone a conspiracy theorist?” Because they don’t read. Because they don’t read.
December 8, 2025 at 11:49 PM
“Why are folks getting dumber?” Because they don’t read. “Why aren’t men as romantic & poetic as they used to be?” Because they don’t read. “Why are people so vulnerable to propaganda?” “Why is everyone a conspiracy theorist?” Because they don’t read. Because they don’t read.
A fascinating view into the Russo Ukraine war. Highly recommended.
Just did a Substack Live with Ukrainian General Volodomyr Havrylov. He gave a fascinating overview of the changes in the war. For instance, now Ukraine is close to inflicting 50% of the casualties on the Russians using only 10% of the Ukr military. open.substack.com/pub/phillips...
Phillips O’Brien and Volodomyr Havrylov
A recording from Phillips P. OBrien's live video
open.substack.com
December 24, 2025 at 9:52 AM
A fascinating view into the Russo Ukraine war. Highly recommended.
Reposted by Erling D. Andersen
These 20 points look pretty good for Ukraine. The chance of Russia accepting this plan is zero. There is no indication that the negotiations have moved anywhere substantially in terms of ending the war.
President Zelensky for the first time outlined 20 points from his Peace Proposal for Ukraine.
December 24, 2025 at 8:58 AM
These 20 points look pretty good for Ukraine. The chance of Russia accepting this plan is zero. There is no indication that the negotiations have moved anywhere substantially in terms of ending the war.
Reposted by Erling D. Andersen
Jette Albinus is one of the best military leaders I know. We are lucky to have her in charge of Multinational Division North in Latvia.
❗Jette Albinus ist die erste Frau, die in der 🇩🇰 dänischen Armee den Rang eines Generalmajors erreichte. Sie führt die Multinationale Division in #Lettland. Lest mehr über sie hier 👉 www.reservistenverband.de/magazin-loya...
>> Wir sind das Magazin vom @reservistenverband.bsky.social <<
>> Wir sind das Magazin vom @reservistenverband.bsky.social <<
December 24, 2025 at 9:25 AM
Jette Albinus is one of the best military leaders I know. We are lucky to have her in charge of Multinational Division North in Latvia.
Reposted by Erling D. Andersen
To those thinking Russia is winning in Ukraine:
Imagine if when we invaded Iraq, we were almost four years into it, only occupied 20 percent, and lost a million men.
Not a soul would call that “winning.”
Imagine if when we invaded Iraq, we were almost four years into it, only occupied 20 percent, and lost a million men.
Not a soul would call that “winning.”
December 16, 2025 at 1:16 AM
To those thinking Russia is winning in Ukraine:
Imagine if when we invaded Iraq, we were almost four years into it, only occupied 20 percent, and lost a million men.
Not a soul would call that “winning.”
Imagine if when we invaded Iraq, we were almost four years into it, only occupied 20 percent, and lost a million men.
Not a soul would call that “winning.”
Reposted by Erling D. Andersen
Hadi Salloum, Roland Hildebrand, Nhat Trung Nguyen, Vitali Pirau, Amer Al Badr, Mohammad Alkousa, Alexander Gasnikov
Speeding up the Goemans-Williamson randomized procedure by difference-of-convex optimization
https://arxiv.org/abs/2512.08852
Speeding up the Goemans-Williamson randomized procedure by difference-of-convex optimization
https://arxiv.org/abs/2512.08852
December 10, 2025 at 5:28 AM
Hadi Salloum, Roland Hildebrand, Nhat Trung Nguyen, Vitali Pirau, Amer Al Badr, Mohammad Alkousa, Alexander Gasnikov
Speeding up the Goemans-Williamson randomized procedure by difference-of-convex optimization
https://arxiv.org/abs/2512.08852
Speeding up the Goemans-Williamson randomized procedure by difference-of-convex optimization
https://arxiv.org/abs/2512.08852
Good old days.
When's the list of the accomplishment of Trump coming out? I need a good laugh after 11 months of this political chaos.
BTW... Thanks, Joe
BTW... Thanks, Joe
December 8, 2025 at 6:08 AM
Good old days.
Reposted by Erling D. Andersen
Tusind tak, Danmark, for jeres urokkelige støtte til Ukraine. 🇩🇰🇺🇦
Thank you, Denmark, for your unwavering support for Ukraine. 🇩🇰🇺🇦
Дякуємо, Даніє, за вашу непохитну підтримку України. 🇩🇰🇺🇦
Thank you, Denmark, for your unwavering support for Ukraine. 🇩🇰🇺🇦
Дякуємо, Даніє, за вашу непохитну підтримку України. 🇩🇰🇺🇦
November 25, 2025 at 4:59 PM
Tusind tak, Danmark, for jeres urokkelige støtte til Ukraine. 🇩🇰🇺🇦
Thank you, Denmark, for your unwavering support for Ukraine. 🇩🇰🇺🇦
Дякуємо, Даніє, за вашу непохитну підтримку України. 🇩🇰🇺🇦
Thank you, Denmark, for your unwavering support for Ukraine. 🇩🇰🇺🇦
Дякуємо, Даніє, за вашу непохитну підтримку України. 🇩🇰🇺🇦
Reposted by Erling D. Andersen
One thing that is not getting enough attention is that Trump has normalized the idea of the United States supporting the transfer of territory and millions of people from a democracy to a dictatorship.
The ending of freedom for millions is now the official US position.
The ending of freedom for millions is now the official US position.
November 24, 2025 at 3:27 PM
One thing that is not getting enough attention is that Trump has normalized the idea of the United States supporting the transfer of territory and millions of people from a democracy to a dictatorship.
The ending of freedom for millions is now the official US position.
The ending of freedom for millions is now the official US position.
Reposted by Erling D. Andersen
"No, this is not cost-cutting or isolationism. This is picking a side – Putin’s side. Any pretence at even-handedness has gone. The tragic truth is that, kompromat or no kompromat, Trump is behaving precisely as he would if he were a Russian asset."
www.telegraph.co.uk/news/2025/11...
www.telegraph.co.uk/news/2025/11...
Access Restricted
www.telegraph.co.uk
November 22, 2025 at 8:08 PM
"No, this is not cost-cutting or isolationism. This is picking a side – Putin’s side. Any pretence at even-handedness has gone. The tragic truth is that, kompromat or no kompromat, Trump is behaving precisely as he would if he were a Russian asset."
www.telegraph.co.uk/news/2025/11...
www.telegraph.co.uk/news/2025/11...
Reposted by Erling D. Andersen
During his meeting with high school students in Slovakia, PM Fico said that EU would allocate money "to continue the war" in Ukraine.
When the students objected, he told them to go to Ukraine if they support the war.
The students walked out.
When the students objected, he told them to go to Ukraine if they support the war.
The students walked out.
November 14, 2025 at 3:36 PM
During his meeting with high school students in Slovakia, PM Fico said that EU would allocate money "to continue the war" in Ukraine.
When the students objected, he told them to go to Ukraine if they support the war.
The students walked out.
When the students objected, he told them to go to Ukraine if they support the war.
The students walked out.
Reposted by Erling D. Andersen
I går var det en desværre lidt overset mærkedag: UNESCO’s World Science Day. I den anledning var jeg inviteret til en debat om vigtigheden af akademisk frihed og forskningens betydning for os alle. Vi ser jo desværre et pres på den frie forskning fra flere sider. Også i Danmark.
November 11, 2025 at 9:08 AM
I går var det en desværre lidt overset mærkedag: UNESCO’s World Science Day. I den anledning var jeg inviteret til en debat om vigtigheden af akademisk frihed og forskningens betydning for os alle. Vi ser jo desværre et pres på den frie forskning fra flere sider. Også i Danmark.
Reposted by Erling D. Andersen
I with the PSF.
The Python Software Foundation was recommended for a $1.5M grant from the National Science Foundation. The terms of the award said PSF could not work on DEI, whether or not the grant funding was used for it.
PSF therefore declined the funding.
Science suffers, but commitment to core values remains
PSF therefore declined the funding.
Science suffers, but commitment to core values remains
TLDR; The PSF has made the decision to put our community and our shared diversity, equity, and inclusion values ahead of seeking $1.5M in new revenue. Please read and share. pyfound.blogspot.com/2025/10/NSF-...
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October 28, 2025 at 5:14 AM
I with the PSF.
Interesting work on closing the gap between theory and practice of the simplex algorithm.
The simplex algorithm is super efficient. 80 years of experience says it runs in linear time. Nobody can explain _why_ it is so fast.
We invented a new algorithm analysis framework to find out.
We invented a new algorithm analysis framework to find out.
Beyond Smoothed Analysis: Analyzing the Simplex Method by the Book
Narrowing the gap between theory and practice is a longstanding goal of the algorithm analysis community. To further progress our understanding of how algorithms work in practice, we propose a new alg...
arxiv.org
October 28, 2025 at 5:11 AM
Interesting work on closing the gap between theory and practice of the simplex algorithm.
Ad expected then Putin makes Trump look like a fool.
October 22, 2025 at 6:06 AM
Ad expected then Putin makes Trump look like a fool.
Reposted by Erling D. Andersen
Thank you, Denmark and Norway! 🇺🇦🇩🇰🇳🇴
The Danish government is allocating DKK 1.1 billion ($171,5 million) in military aid for Ukraine, focused on training and maritime security, the country's defence ministry said⤵️
The Danish government is allocating DKK 1.1 billion ($171,5 million) in military aid for Ukraine, focused on training and maritime security, the country's defence ministry said⤵️
October 16, 2025 at 7:46 AM
Thank you, Denmark and Norway! 🇺🇦🇩🇰🇳🇴
The Danish government is allocating DKK 1.1 billion ($171,5 million) in military aid for Ukraine, focused on training and maritime security, the country's defence ministry said⤵️
The Danish government is allocating DKK 1.1 billion ($171,5 million) in military aid for Ukraine, focused on training and maritime security, the country's defence ministry said⤵️
@sophie.huiberts.me is featured in a Quanta magazine article about the simplex method.
www.quantamagazine.org/researchers-...
www.quantamagazine.org/researchers-...
Researchers Discover the Optimal Way To Optimize | Quanta Magazine
The leading approach to the simplex method, a widely used technique for balancing complex logistical constraints, can’t get any better.
www.quantamagazine.org
October 15, 2025 at 7:28 AM
@sophie.huiberts.me is featured in a Quanta magazine article about the simplex method.
www.quantamagazine.org/researchers-...
www.quantamagazine.org/researchers-...