Paul Rubin
parubin.bsky.social
Paul Rubin
@parubin.bsky.social
Apostate mathematician, operations research, optimization, Pro Bono Analytics, inarticulate Java & R coder
Reposted by Paul Rubin
Now I'm a believer.
November 1, 2025 at 1:01 PM
Reposted by Paul Rubin
It was an honor and a pleasure to chair the 2025 Mixed Integer Programming Workshop from June 2 to 6 in Minneapolis, MN. For everyone that missed it, we missed you too but you may catch up on the talk/poster details and competition winners via mixedinteger.org/2025 and the #mip2025 workshop program.
Mixed Integer Programming Workshop 2025
mixedinteger.org
June 15, 2025 at 10:56 PM
Reposted by Paul Rubin
The Mathematics Jobs Wiki is open for the 2025–2026 season.
notable.math.ucdavis.edu/wiki/Mathema...
#MathSky
Mathematics Jobs Wiki - NotableMathWiki
notable.math.ucdavis.edu
June 3, 2025 at 3:27 PM
Reposted by Paul Rubin
Teddy knew what he was talking about.
May 12, 2025 at 9:01 PM
An interesting new website just launched for folks in the optimization community.

optimization4all.com
Optimization Expertise Hub
optimization4all.com
May 6, 2025 at 4:36 PM
Reposted by Paul Rubin
This quote seems to harken some public figure, but for the life of me I can't think of who it might be....

(h/t to 7Takeaways [.com]. Worth a free subscription.)
May 3, 2025 at 1:00 PM
Reposted by Paul Rubin
Matthew Hiller started making anti-Elon Musk stickers for Teslas after Musk's X takeover. He's made six figures selling them.
Meet the man who made six figures selling anti-Elon Musk Tesla stickers
Matthew Hiller started making anti-Elon Musk stickers for Teslas after Musk's X takeover. He's made six figures selling them.
www.npr.org
April 25, 2025 at 7:13 PM
Reposted by Paul Rubin
Pete Hegseth: ‘There Are No State Secrets In A Healthy Relationship’
Pete Hegseth: ‘There Are No State Secrets In A Healthy Relationship’
WASHINGTON—Staunchly defending his decision to share sensitive military data in messages to his wife, Defense Secretary Pete Hegseth told reporters Monday, “There are no state secrets in a healthy rel...
theonion.com
April 21, 2025 at 6:57 PM
Reposted by Paul Rubin
During the campaign, Trump said it would be so easy to end the war in Ukraine he could do it in 24 hours and in fact would do it before being inaugurated. Three months after his inauguration, his chief diplomat now says it is so hard he may stop trying. www.nytimes.com/2025/04/18/w...
Rubio Says U.S. to ‘Move On’ From Ukraine Peace Efforts if No Progress Soon
“If it is not possible to end the war in Ukraine, we need to move on,” Secretary of State Marco Rubio said as he departed meetings in Paris.
www.nytimes.com
April 18, 2025 at 1:58 PM
Reposted by Paul Rubin
My dad's mom died when I was 15ish. I didn't use my mom's mother as an excuse; instead, I sat with her as she died several years after I graduated college. But I do remember "my grandmother died" being used by several other students as an excuse during my college years. Some 'died' several times!
April 13, 2025 at 1:00 PM
Reposted by Paul Rubin
Today, the daughters of Dr. Marguerite Frank wrote me that she passed away on Dec. 11 at the age of 97. I had written a post about her & Ailsa Land when they turned 93: annanagurney.blogspot.com/2021/03/cele... No obituary yet. Marguerite was a friend. I helped with a paper award in her honor. #orms
Celebrating Two Amazing Female Operations Researchers, Both 93 Years Old, for Their Contributions to Algorithms
Since this blogpost was published, sadly, Professor Ailsa Land passed away on May 16, 2021. Please refer to this obituary posted on the Lond...
annanagurney.blogspot.com
December 26, 2024 at 5:12 PM
Reposted by Paul Rubin
Santa may be late this year.
December 24, 2024 at 8:00 PM
Reposted by Paul Rubin
Santa may be late this year.
December 24, 2024 at 10:00 PM
Reposted by Paul Rubin
New starter pack if you're looking for the #orms community on here: go.bsky.app/SvBND16

Also if you have recommendations of people to add, feel free to send them my way.
November 8, 2024 at 4:38 PM
Erwin Kalvelagen posted slides for a talk he gave about large scale #optimization models. It contains some interesting stuff. yetanothermathprogrammingconsultant.blogspot.com/2024/07/prac...
Practical Large-Scale Modeling: Sparsity
Presentation at USDA-ERS Model Summit 2024.
yetanothermathprogrammingconsultant.blogspot.com
July 16, 2024 at 9:55 PM
Random thought for the day: a completely logical AI program would probably crash trying to fill out a US federal tax return; but an LLM prone to hallucination would have no trouble with it.
April 17, 2024 at 7:12 PM
Interesting post by Nate Brixius about a mixed integer programming model ahead of its time. nathanbrixius.wordpress.com/2024/04/13/d...
Don Knuth’s MIP, 64 years later
In 1960, the famed computer scientist Don Knuth wrote a technical paper in which he considered an integer programming model for minimizing memory access latency of an IBM 650. I've included a screensh...
nathanbrixius.wordpress.com
April 13, 2024 at 3:45 PM