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How Far Behind the Frontier Are Leading Open-Weight Models on Cyber?

https://www.aisi.gov.uk/blog/how-far-behind-the-frontier-are-leading-open-weight-models-on-cyber
2•Imbiss•1m ago•0 comments

Shorter is longer than longer [video]

https://www.youtube.com/watch?v=MFR6SMV64h4
1•Zinu•1m ago•1 comments

Zero risk isn't the job: a CISO's guide to agentic AI

https://claude.com/blog/ciso-guide-to-agentic-ai
1•talboren•1m ago•0 comments

Why S-Expressions

https://modolap.substack.com/p/why-s-expressions
1•ronfriedhaber•5m ago•0 comments

The secret Trump administration battle to fight Chinese AI

https://www.axios.com/2026/07/20/ai-us-china-open-source-kimi
1•_____k•5m ago•0 comments

Private Inference for Coding Agents

https://zro.moonmath.ai/
1•Otsar_zro•6m ago•0 comments

GENE.01: Comes to Life [video]

https://www.youtube.com/watch?v=mGF142yepjc
1•mndren•7m ago•0 comments

Show HN: Mu – A Personal Home Server

https://github.com/micro/mu
1•asim•7m ago•0 comments

Throw, Result, or Neither?

https://www.architecture-weekly.com/p/throw-result-or-neither
1•thunderbong•8m ago•0 comments

Google Is Building an A.I. Fence Around the Internet It Once Championed

https://www.nytimes.com/2026/07/20/technology/google-ai-open-web.html
4•napolux•17m ago•0 comments

Show HN: Lokalite – local secrets for CLIs and coding agents

https://github.com/RubenGlez/lokalite
1•rubenglez•18m ago•0 comments

Show HN: Remove the Gemini watermark by solving the alpha blend, not inpainting

https://github.com/long66666/gemini-watermark-remover
1•LohnChen•20m ago•0 comments

AliSQL 8.0.44-2: DuckDB, VIDX, Native Flashback, and Transaction Optimizations

https://p1p1bear.github.io/alisql-release-page/
1•baotiao•20m ago•0 comments

Burnham is fifth UK PM in four years, now he'll try to buck the trend

https://www.bbc.com/news/articles/cr7knml2y99o
4•teleforce•22m ago•1 comments

Computers Care About Code

https://davidwhitney.co.uk/blog/2026/07/20/computers_finally_care_about_code/
1•henrik_w•24m ago•0 comments

Unity CLI

https://unity.com/blog/meet-the-unity-cli
1•doanbactam•27m ago•1 comments

Show HN: Flag Buddy, a learning game for kids (who can't read yet)

https://labs.davidbauer.ch/kindergames/flaggen-buddy/en/
1•davidbauer•29m ago•0 comments

IPv8: The Draft of a New Internet

https://transitai.app/blog/ipv8-draft-zone-server-math/
4•fofoz•29m ago•1 comments

Show HN: AI chat exporter – Save chat to pdf or word

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2•slimcrm•32m ago•1 comments

The Space Force is now seeking to buy up to $30B in rocket launches

https://arstechnica.com/space/2026/07/the-space-force-is-now-seeking-to-buy-up-to-30-billion-in-r...
3•rbanffy•32m ago•0 comments

The Organisms That Make Earth's Harshest Places Home

https://www.quantamagazine.org/the-organisms-that-make-earths-harshest-places-home-20260720/
2•ibobev•34m ago•0 comments

» the Life and Times of Maxis, Part 2: SimWorld

https://www.filfre.net/2026/07/the-life-and-times-of-maxis-part-2-simworld/
3•ibobev•34m ago•0 comments

Kuiper Q-Q plot: are these the same?

https://entropicthoughts.com/kuiper-q-q-plot
2•ibobev•34m ago•0 comments

On Cursor's "Agent swarms and the new model economics"

http://replicated.live/blog/follow-up
1•gritzko•36m ago•0 comments

Was Hugging Face Breached by AI Agents?

https://mrkt30.com/was-hugging-face-breached-by-ai-agents/
2•technewssss•40m ago•0 comments

The Night France Saved the British Grid

https://dispatches.kilowatts.io/p/a-midsummer-nights-near-miss
3•okeuro49•41m ago•2 comments

SwiftUI After 7 Years: A Story of Mediocrity [video]

https://www.youtube.com/watch?v=3XaHHFOZeJg
2•dsego•41m ago•0 comments

Controversial US Billionaire Peter Thiel Receives Axel Springer Award

https://dpa-international.com/economics/urn:newsml:dpa.com:20090101:260717-930-400413/
3•doener•45m ago•0 comments

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https://longtermemory.com
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Qwen-Image-3.0: Rich Content, Authentic Details, Deep Knowledge

https://qwen.ai/blog?id=qwen-image-3.0
38•ilreb•48m ago•20 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.