Fabrizio Musacchio#Deepfakes are everywhere, but #DigitalForensics investigators are fighting back:
JP.Q
@JPQ
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Some mathematician.
Another update on one my favorite #MossyEarth projects, the restoration of coral reefs, and the ecosystems they support, in areas of the sea floor in Indonesia that had been devastated by human activity.
We Built It… They Came
José A. AlonsoThe fall of the theorem economy (How AI could destroy mathematics and barely touch it). ~ David Bessis. https://davidbessis.substack.com/p/the-fall-of-the-theorem-economy #AI4Math #LeanProver #ITP
Henry SegermanHere's a second, geared mechanism that transforms between cube and octahedron forms. Full video at https://youtu.be/T9BNMLFHXUw
About a year ago, @ra and I learned of a magic trick where the performer holds an unknotted string and knots it into a trefoil without releasing the ends of the string. A mathematical impossibility! After learning how it is done, we wrote a paper explaining how to execute a similar trick for producing any knot!
https://arxiv.org/abs/2604.13799
We have also recorded a few videos: https://tube.mathe.social/w/p/2M22RF21tkUwC8Hm4Cr8XM
Thanks to @tomkalei for hosting them on his PeerTube instance!
All knots are trivial: a "proof" by sleight of hand
We take a close look at a classical magic trick performed with a string, where a trivial knot is seemingly isotoped into a trefoil, and generalize it to a family of magic tricks for transforming the unknot into other knots. We encode such a trick by depicting the target knot as a special type of knot diagram, which we call a "knotholder diagram". By proving that all knots admit knotholder diagrams, we obtain variants of the trick for producing every knot.
Terence TaoRE: https://mastodon.social/@ZachWeinersmith/116375447678097912
This was a fun collaboration! See also the crypto challenge at the end of the final strip in the 5-part series.
Just unearthed this music video of the vocal quartet Säje, covering a song of Björk. I remember enjoying it very much a few years ago and lamenting that I could not find it again. For some reason, it is unlisted on Youtube, so I am glad I stumbled across it again.
Björk's "New World" // performed by säje
Not Just Bikes 🇳🇱"While some people benefit from automobility, nearly everyone—whether or not they drive—is harmed by it. Slowing automobility’s violence and pollution will be impracticable without the replacement of policies that encourage Car Harm with policies that reduce it.”
This is a quote from a 2024 paper entitled, "Car harm: A global review of automobility’s harm to people and the environment", and I finally made a video about it (now on Nebula & Patreon):
https://nebula.tv/videos/notjustbikes-every-reason-to-hate-cars
@InfiniteHench And if you check your map while lying in bed, she will actually open it while lying down.
It is a wonderful game. :)
Tjeerd RoyaardsWhat we get upset about. Cartoon for Dutch newspaper Trouw: https://www.trouw.nl/cartoons/tjeerd-royaards~bcb45712/
