"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.
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It remains open whether tiling …
[ May 31, 2030] CFP for publication or other deadline: null https://philevents.org/event/show/101922
[ May 2, 2025 - May 3, 2025] Conference or similar: 2025 Mountain-Pacific Meeting of the Society of Christian Philosophers https://philevents.org/event/show/129066
Sonnet 089 - LXXXIX
Say that thou didst forsake me for some fault,
And I will comment upon that offence:
Speak of my lameness, and I straight will halt,
Against thy reasons making no defence.
Thou canst not, love, disgrace me half so ill,
To set a form upon desired change,
As I'll myself disgrace; knowing thy will,
I will acquaintance strangle, and look strange;
Be absent from thy walks; and in my tongue
Thy sweet beloved name n…
Bon, bah j'ai trouvé pourquoi le player de @Castopod (ainsi qu'Apple Podcast en streaming) déconne et me fait des resets de lectures constamment : https://code.castopod.org/adaures/castopod/-/issues/446
Le ticket est ouvert depuis 7 mois sans réponse. Le déploiement de Castopod par docker intégrant nginx est peté...
Vivement la migration Š mon propre service !
Mastering Rust's Error Handling: A Guide to Writing Reliable Code
Rust's error handling system is a cornerstone of the language's commitment to writing safe and reliable code. As a Rust developer, I've come to appreciate the power and flexibility it offers. The system is designed to make error cases explicit, ensuring that developers consider and handle potential failure scenarios. […]
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Classifying Bicycle Infrastructure Using On-Bike Street-Level Images
https://arxiv.org/abs/2410.19194v1
Sonnet 026 - XXVI
Lord of my love, to whom in vassalage
Thy merit hath my duty strongly knit,
To thee I send this written embassage,
To witness duty, not to show my wit:
Duty so great, which wit so poor as mine
May make seem bare, in wanting words to show it,
But that I hope some good conceit of thine
In thy soul's thought, all naked, will bestow it:
Till whatsoever star that guides my moving,
Points on me graciously with fair a…
This is hilarious: #Signal