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@dougmerritt@mathstodon.xyz
2024-11-20 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 …

@kubikpixel@chaos.social
2024-12-12 12:20:16

«Kritische Infrastruktur–Bund muss mehr in Cybersicherheit investieren:
Das eidgenössische Parlament pocht nach dem Xplain-Skandal auf verbindliche Cybersicherheitsprüfungen wichtiger Produkte und rennt damit bei der Landesregierung offene Türen ein»
Unter anderem wäre zB das blinde Vertrauen in IT-Verkäufer sehr wohl zu überlegen und nicht alles nur kurzsichtig anzunehmen.
🔓

@loleg@fosstodon.org
2024-11-08 12:50:35

An in-depth review of the AsciiDoc workshop with #SimplexaCode at #CHopen #WorkshopTage 🔖 with lots of links on the design of impactful software documentation

A skyscraper of the Hochschule Luzern with partially blue and cloudy sky in the background, and train tracks underneath. It is labelled Purpose (sky), Cloud (clouds), Code (top floors), Documentation (ground floors), Infrastructure (train tracks)