Is there currently a program that can determine whether a given matrix is completely positive? ChatGPT 4o can’t seem to do it even when asked to explain its reasoning.

Jason, I agree. But I have to say the whole thing makes me feel very uneasy.

I've been working on a new tool, Refine, to make scholars more productive. If you're interested in being among the very first to try the beta, please read on.

Refine leverages the best current AI models to draw your attention to potential errors and clarity issues in research paper drafts.

1/

It did find something wrong in one of mine, that Ben fed it!

I hope they do release it . It would be nice to be able to compare its chain of thought with yours.

interesting! both your proof and Geminis start with the crtical value of lambda and prove that it works . I would like to see a description of the steps. Gemini went through to determine what that critical value is. How to how did it come up with the two optimal strategies?

Sounds like they want to create the Wisdom from the book “my desperate glory.” Not clear that turned out so well..

Oops so less Boston than I thought. Still good though.

Lots of good signs today at the Boston protest. Several tea-party references, but the most Boston sign was probably “No faux-king way.”

H/t @alroth.bsky.social

stopreturnfascism.org

In the words of Tom Lehrer,
“ to the shores of Sicily, but not to Mississippoli…”

From the ukraine community on Reddit: Former President of Poland Lech Wałęsa wrote the following letter to Trump Explore this post and more from the ukraine community

I somehow missed this open letter from Lech Walesa when it first came out, following the Trump-Zelensky meeting in the White House... It's worth a read.
www.reddit.com/r/ukraine/co...

Very very bad but doesn’t attain the Noem lower bound. (at least I really hope it’s the lower bound!)

"We are not the Gestapo, we only cosplay them on your streets."

The Gains from Deregulating the California Residential Real Estate Insurance Market California should deregulate residential real estate insurance and allow insurers to offer any policy to anyone at any price.

My new substack column on implicit subsidies in insurance markets.
open.substack.com/pub/matthewe...

A pain in the glass!

One award is admirably early, one distressingly late, all well deserved. #Econsky #academicsky
marketdesigner.blogspot.com/2025/04/nati...

Thanks for posting this! I have read many of Ken’s works and spoken with him frequently (though not for a while) but I had not read this one

I agree! But if I knew the people i asked to referee a paper had all refereed it before for the same journal
I would probably try to get at least one new one also

In addition to the subjective decisions of the referees, the editor’s choice of referees is also subjective, and often a bit random. This is all the more reason not to lock in the initial set of referees has the only evaluators.

YouTube video by Kortland Whalum (kortland.) Morehouse College - We Shall Overcome

www.youtube.com/watch?v=Aor6...

“ the state of Israel will promote the development of the country for the benefit of all its inhabitants; will be based on precepts of liberty justice in peace top by the Hebrew prophets; will the full social and political equality of its citizens….”
May that come to be true. Happy Passover!

“… will uphold the full social and political equality of all its citizens, without distinction of race, creed or sex, will guarantee freedom of conscience, worship, education, and culture; will safeguard the sanctity and inviolability of shrines and holy places of all religions…

Beyond parody.

WTAF

I don’t have a strong preference, but I tend to agree with this

It has more listings for me than my Google scholar page does, and since it’s also missing a few the difference undercounts the duplication.

In a similar vein, I have written replies to editors complaining about bad referee comments, without ever intending to send them. Sometimes it helps to vent even if no one else hears.

Yes, agreed. They really don’t seem designed to serve as assistive technology, but rather as cool gadgets kind of like the grown-up version of the kids shoes with wheels in them.