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The Download: AI puzzles and a path to our nearest star system

https://www.technologyreview.com/2026/09/02/1143283/the-download-ai-puzzles-alpha-centauri-mission/
1•joozio•1m ago•0 comments

Sandbox

1•cyteeditor•1m ago•0 comments

Chat Bots Compared: An interactive quiz to find AI companions

https://chatbotscompared.com/
1•Sharanxxxx•1m ago•0 comments

Pre-Release of Polars 2.0

https://pola.rs/posts/announcing-polars-2/
1•komape•4m ago•0 comments

The birthday paradox and why hashes are 256 bits, not 128

https://sslog.dpdns.org/birthday-attack.html
1•Shaurya_Sharma•8m ago•0 comments

An open-source design plugin that helps your AI build less generic websites

https://github.com/MickeyAlton33/web-designer-plugin
1•Nina_antalpha•11m ago•0 comments

Sex After AGI

https://twitter.com/Joshbocanegra/status/2093122061116035105
1•jbai•13m ago•0 comments

Terence Tao: Protecting math problems from automated solvers

https://mathstodon.xyz/@tao/117204929023813310
2•bertman•13m ago•0 comments

No Vibe Coding: Discussion Coding on Termux – Phone Only, Zero Trust

https://m.blog.naver.com/amadale/224399795090
1•garlicfarmer•16m ago•0 comments

Show HN: Self-hosted CRM for manufacturing (Django and Htmx)

https://github.com/OlegUshakov-pl/CRM
1•OlegUshakov•17m ago•0 comments

Markdown Editors Weren't Built for Coding Agents, So I Made One

https://marginal.md/blog.html
2•kishiguro•18m ago•0 comments

Show HN: Tiny Markdown CLI renderer – Streaming, 10x faster, 2MB flat RAM

https://github.com/cjccjj/mdflow
2•cjcj•18m ago•1 comments

Lex Speedman: We love you, Lex. but You talk too slow

https://lexspeedman.com/
1•mellosouls•23m ago•0 comments

Show HN: 2nd Release Canddiate for Back in Time 2.0.0

https://github.com/bit-team/backintime/releases/tag/v2.0.0-rc2
1•buhtz•34m ago•0 comments

How Delhi Built a World-Class Metro for a Bargain

https://www.nytimes.com/2026/09/02/headway/india-delhi-metro-public-transit.html
2•thunderbong•35m ago•0 comments

Show HN: A register of agent-payment code that pays once when the reply is lost

https://aurumflux.co/retry-safety/
1•aurumflux20•36m ago•0 comments

Gemini 3.8 Flash in Google Antigravity – Google Antigravity Blog

https://antigravity.google/blog/gemini-3-8-flash-in-google-antigravity
1•humphrey_liu•38m ago•0 comments

Claude Code skill: no emdashes

https://github.com/woutersf/claude-skill-no-emdashes
1•woutersf•41m ago•0 comments

Upload died on Mac air M5. Apple networking needs reboot

https://frederikwouters.be/blog/have-you-tried-turning-it-off-and-on-again
1•woutersf•41m ago•0 comments

CTTI is Exponential, RTTI is Linear

https://www.gingerbill.org/article/2026/09/02/ctti-is-exponential-rtti-is-linear/
3•thunderbong•42m ago•0 comments

Can AI Create PLC Attacks? Yes, but It's Not That Easy Yet

https://www.forescout.com/blog/can-ai-create-plc-attacks-yes-but-it%E2%80%99s-not-that-easy-yet/
1•Sentralis•44m ago•0 comments

The First Polynomial-Time Algorithm for the Győri-Lovász Theorem

https://arxiv.org/abs/2608.30945
2•pykello•46m ago•0 comments

RSA Factoring Challenge

https://en.wikipedia.org/wiki/RSA_Factoring_Challenge
4•nomilk•48m ago•2 comments

Which AI Fetchers Send Which Headers, Measured on a Live Site

https://gkoreli.com/which-ai-fetchers-send-which-headers
1•gogakoreli•48m ago•1 comments

An ongoing 3D-printer AGPL violation

https://lwn.net/Articles/1089390/
2•pykello•50m ago•0 comments

Creating Emacs Color Themes, Revisited

https://emacsredux.com/blog/2026/03/30/creating-emacs-color-themes/
2•signa11•51m ago•0 comments

Infrastructure quartermaster: inside a China-nexus state enablement model

https://www.lumen.com/blog/en-us/the-infrastructure-quartermaster-inside-a-china-nexus-state-enab...
1•Bluestein•54m ago•0 comments

Analysis: China's CO2 emissions fall in Q2 2026 due to plummeting oil use

https://www.carbonbrief.org/analysis-chinas-co2-emissions-fall-in-q2-2026-due-to-plummeting-oil-use
4•xbmcuser•55m ago•1 comments

Is This the Future of America?

https://www.theverge.com/cs/features/975597/loudoun-county-virginia-data-center-backlash
4•JSR_FDED•58m ago•1 comments

Ask HN: Advice on Migrating from 1Password?

9•0xbadcafebee•1h ago•10 comments
Open in hackernews

Ask HN: Why is big O often used in CS when omega or theta should be used?

2•amichail•1y ago
Do most people not know about omega and theta or perhaps they intentionally misuse asymptotic notation?

Comments

adrianN•1y ago
Finding lower bounds is generally more difficult.
amichail•1y ago
People often use big O notation in all cases including for lower bounds.
adrianN•1y ago
BigO for lower bounds is plain wrong
numpad0•1y ago
Those aren't in the ASCII table.
compressedgas•1y ago
I've found some people on a well known QA site to be so strict with big-O notation that I don't use it anymore and instead only refer to constant, linear, quadratic time and so on. Even when O(1), O(n), O(n^2) would be actually easier to write even if they are technically wrong.