Hacker News: tzury

New comment by tzury in "Stripe will reportedly acquire OpenRouter for $7B+"

tzury — Mon, 17 Aug 2026 05:30:58 +0000

As opposed to PayPal which is now talking in front of the mirror.

https://finance.yahoo.com/markets/stocks/articles/breaking-p...

New comment by tzury in "In 1962, Egypt's Missile Program Lost Its Key Scientist Without a Trace"

tzury — Sat, 15 Aug 2026 12:19:24 +0000

Use Google Translate or llm to translate the content in this url

https://www.intelligence.org.il/?module=articles&item_id=16&...

How Gödel's Proof Works (2020)

tzury — Thu, 13 Aug 2026 19:44:46 +0000

Article URL: https://www.quantamagazine.org/how-godels-proof-works-20200714/

Comments URL: https://news.ycombinator.com/item?id=49290969

Points: 121

# Comments: 65

New comment by tzury in "Text AI watermarks will always be trivial to remove"

tzury — Thu, 13 Aug 2026 17:12:49 +0000

If everyone is using ai (per reported revenues) and nobody like the outcome (banned here, dismissed there), then what is the future of AI?

New psychedelic clinics treat rare post-trip harms

tzury — Tue, 11 Aug 2026 12:34:26 +0000

Article URL: https://www.scientificamerican.com/article/first-of-its-kind-clinic-treats-psychedelic-side-effects/

Comments URL: https://news.ycombinator.com/item?id=49257288

Points: 3

# Comments: 0

Could psilocybin be the key to treating anorexia?

tzury — Wed, 05 Aug 2026 11:39:09 +0000

Article URL: https://www.scientificamerican.com/article/psilocybin-could-kick-start-anorexia-recovery-early-results-suggest/

Comments URL: https://news.ycombinator.com/item?id=49181419

Points: 42

# Comments: 75

Alexander Graham Bell's Tetrahedral Kites (1903–9)

tzury — Mon, 03 Aug 2026 02:57:30 +0000

Article URL: https://publicdomainreview.org/collection/alexander-graham-bell-s-tetrahedral-kites-1903-9/

Comments URL: https://news.ycombinator.com/item?id=49150721

Points: 2

# Comments: 0

The Quietest Mathematician Has Always Been Worth Listening To

tzury — Fri, 24 Jul 2026 00:39:04 +0000

Article URL: https://www.quantamagazine.org/john-pardon-wins-the-2026-fields-medal-for-work-in-symplectic-geometry-20260723/

Comments URL: https://news.ycombinator.com/item?id=49029975

Points: 6

# Comments: 0

Saying Goodbye to My Office

tzury — Thu, 23 Jul 2026 23:50:28 +0000

Article URL: https://manilsuri.substack.com/p/on-saying-goodbye-to-my-office

Comments URL: https://news.ycombinator.com/item?id=49029624

Points: 12

# Comments: 1

New comment by tzury in "The early History of the Singular Value Decomposition (1993) [pdf]"

tzury — Sun, 12 Jul 2026 03:19:08 +0000

Here you sit, an undergraduate with a calculus book open before you, or a pre-thesis graduate student with one of those books whose first ten pages, at least, you would like to master, or a research mathematician (established or would-be) with an article fresh off the press—what do you do now? How do you study, how do you penetrate the darkness, how do you learn something?

All I can tell you for sure is what I do, but I do suspect that the same sort of thing works for everyone. It's been said before and often, but it cannot be overemphasized: study actively. Don't just read it; fight it! Ask your own questions, look for your own examples, discover your own proofs. Is the hypothesis necessary? Is the converse true? What happens in the classical special case? What about the degenerate cases? Where does the proof use the hypothesis?

— Paul Halmos, “I Want to Be a Mathematician”, Study.

Some books simply built around this protocol, some are making it “easier” so they’re more popular and sell more.

New comment by tzury in "The early History of the Singular Value Decomposition (1993) [pdf]"

tzury — Sun, 12 Jul 2026 03:13:19 +0000

They do. You get some in the prose, and then more in the exercises.

Learn ____ the hard way.

New comment by tzury in "The early History of the Singular Value Decomposition (1993) [pdf]"

tzury — Sun, 12 Jul 2026 03:12:19 +0000

That is the poetry. When all parts clicks together.

New comment by tzury in "The early History of the Singular Value Decomposition (1993) [pdf]"

tzury — Sat, 11 Jul 2026 23:23:13 +0000

From the preface

“You cannot read mathematics the way you read a novel.

If you zip through a page in less than an hour, you are probably going too fast.

When you encounter the phrase “as you should verify”, you should indeed do the verification, which will usually require some writing on your part.

When steps are left out, you need to supply the missing pieces.

You should ponder and internalize each definition.

For each theorem, you should seek examples to show why each hypothesis is necessary.”

It is a math studying book, not a let me chew it for you before you take it in type of a book. It requires effort, focus and missing steps are missing on purpose so you will discover them. This is the fun about studying mathematics.

Sorry you fell that way, but the book in my opinion is a masterpiece in math composition.