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hyperthesis commented on I've acquired a new superpower   danielwirtz.com/blog/spot... · Posted by u/wirtzdan
hyperthesis · 8 months ago
A parallel processor is you!
hyperthesis commented on Fermat's Last Theorem – how it’s going   xenaproject.wordpress.com... · Posted by u/verbify
vouaobrasil · 9 months ago
> The experts are in agreement that the important ideas are robust enough to withstand knocks like this, but the details of what is actually going on might not actually be where you expect them to be.

Past researcher in pure math here. The big problem is that mathematicians are notorious for not providing self-contained proofs of anything because there is no incentive to do so and authors sometimes even seem proud to "skip the details". What actually ends up happening is that if you want a rigorous proof that can be followed theoretically by every logical step, you actually need an expert to fill in a bunch of gaps that simply can't easily be found in the literature. It's only when such a person writes a book explaining everything that it might be possible, and sometimes not even then.

The truth is, a lot of modern math is on shaky ground when it comes to stuff written down.

hyperthesis · 9 months ago
There'a a story that when someone wrote up a famous mathematician's work (Euler?), he found many errors, some quite serious. But all the theorems were true anyway.

Sounds like Tao's third stage, of informed intuition.

hyperthesis commented on Unique killer whale pod may have acquired special skills to hunt whale sharks   phys.org/news/2024-11-uni... · Posted by u/pseudolus
krisoft · 9 months ago
> They may also recognize that eating humans comes with unknown risks because they are pretty observant of what humans are capable of.

Idk about that. We have some skills but orcas see basically none of them. From their perspective we are slow and bad swimmers who need to breath all the time.

Would an orca even understand that we made and control boats/ship as opposed to that humans live on boats/ships the same way fleas live on a dog?

Mind you, i’m not saying orcas are stupid. What I’m saying is that the slices of our life they can observe are not impressive, and the impressive things we do are not readily observable to them.

hyperthesis · 9 months ago
Consider whaling, by killer apes.
hyperthesis commented on Everyone is capable of, and can benefit from, mathematical thinking   quantamagazine.org/mathem... · Posted by u/sonabinu
davidbessis · 9 months ago
I'm the author of what you've just described as clickbait.

Interestingly, the 100m metaphor is extensively discussed in my book, where I explain why it should rather lead to the exact opposite of your conclusion.

The situation with math isn't that there's a bunch of people who run under 10s. It's more like the best people run in 1 nanosecond, while the majority of the population never gets to the finish line.

Highly-heritable polygenic traits like height follow a Gaussian distribution because this is what you get through linear expression of many random variations. There is no genetic pathway to Pareto-like distribution like what we see in math — they're always obtained through iterated stochastic draws where one capitalizes on past successes (Yule process).

When I claim everyone is capable of doing math, I'm not making a naive egalitarian claim.

As a pure mathematician who's been exposed to insane levels of math "genius" , I'm acutely aware of the breadth of the math talent gap. As explained in the interview, I don't think "normal people" can catch up with people like Grothendieck or Thurston, who started in early childhood. But I do think that the extreme talent of these "geniuses" is a testimonial to the gigantic margin of progression that lies in each of us.

In other words: you'll never run in a nanosecond, but you can become 1000x better at math than you thought was your limit.

There are actual techniques that career mathematicians know about. These techniques are hard to teach because they’re hard to communicate: it's all about adopting the right mental attitude, performing the right "unseen actions" in your head.

I know this sounds like clickbait, but it's not. My book is a serious attempt to document the secret "oral tradition" of top mathematicians, what they all know and discuss behind closed doors.

Feel free to dismiss my ideas with a shrug, but just be aware that they are fairly consensual among elite mathematicians.

A good number of Abel prize winners & Fields medallists have read my book and found it important and accurate. It's been blurbed by Steve Strogatz and Terry Tao.

In other words: the people who run the mathematical 100m in under a second don't think it's because of their genes. They may have a hard time putting words to it, but they all have a very clear memory of how they got there.

hyperthesis · 9 months ago
This beats TFA. Interesting relation between cumulativeness and distribution ("Yule process"). But how does this explain variation is how quickly children pick up maths - would you argue it's due to prior exposure e.g. parental tutoring?

Any comments on the "10x programmer"?

hyperthesis commented on Ask HN: Axiomatic algebra, like ch 1 Spivak's Calculus?    · Posted by u/hyperthesis
hyperthesis · a year ago
Thanks, I'll take a look at those late chapters.

The algebra is my main interest, that happens to be in a calculus text.

0a = 0 is proven later in ch 1, it's just the ordering.

By "something I could code", I mean implementimg these properties (more like writing a proof assistant).

hyperthesis · a year ago
Being more precise: I like Spivak not defining addition, multiplication or number. I just want the other steps explicit, like equality transitivity, enough to implement it (for a computer without "mathematical maturity".)

I feel I already know what's needed - but I didn't catch the 0.a=0 omission at first, and there's surely others I'm still missing... Part of the problem is I have too much implicit knowledge.

hyperthesis commented on Ask HN: Axiomatic algebra, like ch 1 Spivak's Calculus?    · Posted by u/hyperthesis
octed · a year ago
Everything you are looking for is provided in the Epilogue of Spivak. For instance, in chapter 28, you will be able to show that 0a = 0 in any field. In chapter 29, you will rigorously define the reals as well as the operations on them. You will also show that they form a complete ordered field, which allows you to use the results from chapter 28. In chapter 30 you will show that all complete ordered fields are "essentialy the same" as the real numbers---i.e., the real numbers are "unique."

At the moment I'd advise not worrying much about the construction of the reals. Ideas such as limits, continuity, differentiation, integration, and even fields are much more important for later mathematics and applications (abstract algebra, topology, geometry, physics) than the construction of the reals. Constructing the reals is pretty much something you do a couple of times (traditionally once with Dedkind cuts, as in Spivak, and once more with Cauchy sequences) and then never think about again.

Edit: I'm not sure what you mean by "something I could code." If you want something that you could type in a proof assistant you might have some luck looking at the mathlib library of Lean https://leanprover-community.github.io/mathlib4_docs/Mathlib....

hyperthesis · a year ago
Thanks, I'll take a look at those late chapters.

The algebra is my main interest, that happens to be in a calculus text.

0a = 0 is proven later in ch 1, it's just the ordering.

By "something I could code", I mean implementimg these properties (more like writing a proof assistant).

hyperthesis commented on Applied Mathematical Programming (1977)   web.mit.edu/15.053/www/AM... · Posted by u/ibobev
toolslive · a year ago
> But the interviewers will not appreciate this solution approach lol.

I once witnessed a programmer with a PhD in Maths find closed form formulas for a lot of questions where it was expected to write some code with loops building/accumulating a result. As a simple example, to explain what was going on, if the question would be "calculate the 100th fibonacci number", she would just use Binet's formula to do so (as opposed to using a loop). I was rather impressed how often that happened.

hyperthesis · a year ago
TBF Binet's formula is astonishing

u/hyperthesis

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