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421. Classical billiards can compute (2d billiard systems are Turing complete)
Abstract page for arXiv paper 2512.19156: Classical billiards can compute
422. From Compose to Systemd: Elegantly Managing Containers with Podman and Quadlet
This article introduces how to use Podman and Quadlet to elegantly migrate traditional Compose configurations to the Systemd management system. Using Immich as an example, it details configuration conversion, environment adaptation, and automated deployment processes, helping you achieve declarative, system-level hosting of container services.
423. Perfect Is the Enemy of Good (2025)
424. Donald Knuth's 2025 Christmas lecture: the Knight's Tours
This year, Knuth took a detour, sharing his recent breakthroughs in classifying and counting the trillions of ways a knight can visit every square on a chessboard.
425. Ask HN: What is the international distribution/statistics of HN visitors?
426. Use Codex (OpenAI Coding Agent Framework) for a Personal Search Solution
Automate everything. Codex in a local Docker container with cron, file watchers, webhooks, search/indexing, speech, and hundreds of tools on tap. - codex-container/examples/personal_search/DOC_SEARCH.md at main · DeepBlueDynamics/codex-container
427. AMD Strix Halo vs. Nvidia DGX Spark
428. Cloudflare Is Ruining the Internet
429. Microsoft Agent Framework
Learn about Microsoft Agent Framework
430. The 9th Circuit Upholds Professor's Right to Mock 'Land Acknowledgments'
431. FCC Updates Covered List to Include Foreign UAS and UAS Critical Components [pdf]
432. Codex is a Slytherin, Claude is a Hufflepuff
A Highly Unscientific Assessment of AI Coding Agents
433. Things I learnt about passkeys when building passkeybot
Interesting things about passkeys in webauthn
434. Microsoft Is Finally Killing RC4
435. Silver rises 9% to hit fresh record high
436. New reactor produces clean energy and carbon nanotubes from natural gas
437. Show HN: I built an open-source Linux-capable single-board computer with DDR3
A low-cost H3 single-board computer capable of running Linux with DDR3 - cheyao/icepi-sbc
438. Sad times StackOverflow takes down all its physical servers
439. Cursed circuits #3: true mathematics
Op-amp arithmetics, explained in a more accessible way