Tootfinder

On Markowitz's pseudodistance for conformal manifolds
Adam Chalumeau (IRMA, uni.lu)
https://arxiv.org/abs/2509.15745 https://arxiv.org/pdf/2509.15745…

On Markowitz's pseudodistance for conformal manifolds
In the 1980s, M. J. Markowitz introduced a conformally invariant pseudodistance on pseudo-Riemannian manifolds, inspired by the Kobayashi metric in projective geometry. This construction relies on a distinguished class of parametrized lightlike geodesics, called projectively parametrized. We begin by reviewing the fundamental properties of this pseudodistance and provide several families of examples where it is non-degenerate and, in some cases, complete. In particular, we investigate three cla…

Source: Snap is considering raising outside money to fund Spectacles development or spinning off Spectacles, to compete with deeper-pocketed rivals like Meta (The Information)
https://www.theinformation.com/articles/struggling-snap-considers-outsi…

Struggling Snap Considers Outside Funding for AR Glasses
For nearly as long as Evan Spiegel has run Snap Inc., his big bet has been on Spectacles, the company’s augmented reality glasses. All together, he has poured $3 billion into the effort—a fraction of what Mark Zuckerberg at Meta Platforms has invested in wearable technology, but a major expense ...

Haven't posted these in a while, but there's not much change:
Since @… has left #X/ #Twitter, we've seen a bit more

Words fail me.
https://apnews.com/article/trump-indians-redskins-guardians-commanders-8863d8d95f56414f0f74cab0e897a93f

Trump's latest demand: Washington football and Cleveland baseball teams should change names back
President Donald Trump has called for Washington's football team and Cleveland's baseball team to return to their previous names. On Sunday, Trump posted on Truth Social urging the Washington Commanders to revert to the Redskins and the Cleveland Guardians to return to the Indians. He claimed there is significant public support for the change, citing heritage and tradition. However, both teams have stated they have no plans to revisit the name changes. The Commanders and Guardians adopted their…

physics_collab: Multilayer physicist collaborations (2015)
Two multiplex networks of coauthorships among the Pierre Auger Collaboration of physicists (2010-2012) and among researchers who have posted preprints on arXiv.org (all papers up to May 2014). Layers represent different categories of publication, and an edge's weight indicates the number of reports written by the authors. These layers are one-mode projections from the underlying author-paper bipartite network.
This n…

I don't think that "give beginners LLMs to get them started so they can actually learn to do it later" checks out.
(Original title: But will they?)
https://tante.cc/2025/07/21/but-will-they/

But will they?
Armin Ronacher, who is quite a well-known open source developer (especially in the Python community) and who would probably consider himself a very rational, pragmatic person when it comes to “AI” usage posted an interesting post on Mastodon today: Post by @mitsuhiko View on Mastodon So his thought is that giving especially younger, less experienced […]

Trump’s sudden announcement Saturday night that he bombed three Iranian nuclear sites has Republican skeptics of U.S. military action against Iran largely falling in line.
The prospect of strikes against Iran had sparked backlash from Democrats and days of infighting within Trump’s MAGA coalition
But after the president posted on Truth Social that the U.S. has bombed Iran,
several GOP critics cheered the strikes as a "limited action".
Several top Democrats …

There are two types of Linux developers - those who can spell, and
those who can't. There is a constant pitched battle between the two.
(From one of the post-1.1.54 kernel update messages posted to c.o.l.a)

Meta faces a backlash after using Instagram photos of teenage schoolgirls, posted by their parents with visible faces and names, to promote Threads to a man (Robert Booth/The Guardian)
https://www.theguardian.com/technology/2025/sep/20…

internet_as: Internet AS graph (2006)
A symmetrized snapshot of the structure of the Internet at the level of Autonomous Systems (ASs), reconstructed from BGP tables posted by the University of Oregon Route Views Project. This snapshot was created on 22 July 2006.
This network has 22963 nodes and 48436 edges.
Tags: Technological, Communication, Unweighted