"Tiling with Three Polygons is Undecidable"
Erik D. Demaine; Stefan Langerman 17 Sep 2024
Abstract
We prove that the following problem is co-RE-complete and thus undecidable: given three simple polygons, is there a tiling of the plane where every tile is an isometry of one of the three polygons (either allowing or forbidding reflections)? This result improves on the best previous construction which requires five polygons.
...
It remains open whether tiling …
"The German newspaper #Bild also used a screenshot from the video with the caption: "The hunt for Jews has broken out again: Arab mob chases soccer fans in #Amsterdam."
#DW Fact check: False
#Blakes7 Series D, Episode 08 - Games
TARRANT: Well not exactly. These things chuck the lot at you. Flying the real thing's nothing after one of these.
GAMBIT: Countdown eight minutes, still running.
https://blake…
Series B, Episode 05 - Pressure Point
ARLE: Oh, come on, Berg. You're not old enough to have lost your nerve yet. [They start to cross the field. Smoke begins to rise around their feet] Help me. Help me. I can't move.
BERG: I can't. [Small flames lick near their feet] I can't! [His scream is cut off when they are blown up.]
https://blake.torpidity.net/m/205/23 B7B4
In the following, replace:
- "school/education system" with "open source"
- "Western-style" with "supply chain security"
- "Developing countries" with "indie devs" or "FOSS developers"
- "richer nations" with "corporations/big tech"
...and see where we're at in #OpenSource…
Attn Star Trek fans:
I challenge you to listen to this episode of "A Closer Look" without bursting out laughing at Seth Meyer's legendary reference that only we Trek fans will understand. 🤣
✅ Jack Smith Reveals Damning New Coup Evidence Against Trump in Bombshell Filing: A Closer Look
https://<…
🇬🇧 Hi, I'm Tomasz! Hello everyone from https://infosec.exchange! I moved here from my private instance https://mastodon.tomaszdunia.pl/@to3k
#OTD Am 25.10.2009 verhindern anti-imperialistische Linke in Hamburg die Vorführung des Filmes »Warum Israel« von Claude Lanzmann im Kino B-Movie. Zuschauer*innen werden antisemitisch und homofeindlich beschimpft, einige körperlich attakiert. Eine Zäsur.
Question about #Caddy: Does the acme_server db increase in size until disk saturation or is there a pruning mechanism somewhere to delete expired certificates?
I could not find any option regarding pruning, in the Caddyfile config, nor in the JSON config, and I failed to spot any in the source code...
I have a db file still containing certificates that are several months old. The db file was stored in a volume with very limited size and the db ended up filling it entirely (> 100MB) for 20 ACME clients. Chaos ensued.
#infosec #acme #devops
#Fediverse #Inconography
retooted from wakest ⁂ (@liaizon@wake.st). Expanding collection of #icons & #logos from far-flung corners of the #Fedisphere. Take a brief moment to scroll through all these #images. It's a nice feeling.
🔗 #Graphics #KronoMoonPhotos #MoonOverMastodon #federation #branding #blackandwhite #mastodon #pixelfed