@dougmerritt@mathstodon.xyz2024-11-20 22:50:46
"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 …
@mszll@datasci.social2024-11-15 21:42:56
Is "decentralizedwashing" a term yet? See recent #bluesky discussions like: https://social.wildeboer.net/@jwildeboer/113487613965056474
@Maurice809@cherprang.xfk48.com2024-09-30 17:33:08
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@blakes7bot@botsin.space2024-09-13 13:08:49
Series A, Episode 05 - The Web
GEELA: There, you see it's dead. [Brushes away the desiccated remains of the organism]
BLAKE: [Examining his healed hand] That is astonishing.
https://blake.torpidity.net/m/105/314 B7B4
@blakes7bot@mas.torpidity.net2024-11-11 07:09:15
#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…
@blakes7bot@mas.torpidity.net2024-11-09 17:52:16
Series C, Episode 02 - Powerplay
DAYNA: Whh, he's just one less to deal with, do we care why? [pause] But why leave him sitting there?
AVON: To delay discovery and give the murderer a chance to get away.
https://blake.torpidity.net/m/302/286 B7B4
@Maurice809@cherprang.xfk48.com2024-11-04 19:18:30
Ce jeudi 7 novembre 2024 au Falamix Š #Renens 📌
Merci de partager !
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