HNHacker News
TopNewBestAskShowJobs

boyobo

71 karma · joined February 17, 2019

submissionscomments
boyobo··on Binary Decision Diagrams (2010)
A quick google shows that the OP is indeed in academia.
boyobo··on Math Keeps Changing
Maybe things were different back when OP took calc but I’d bet any standard calculus textbook used for instruction in the past 20 years mentions this many times.
boyobo··on Undergraduate Math Student Pushes Frontier of Graph Theory
Most academic jobs are crap precisely because they are not tenured faculty positions at good universities.
boyobo··on Undergraduate Math Student Pushes Frontier of Graph Theory
I already agreed that the op was hinting at an important problem. The link is weak because the op put hardly any effort into explaining the (possible) connection to these two particular undergraduates and their work. I am not claiming that math and deep learning are unrelated. Please read the rest of my response for context.

BTW, I am not using 'hottest buzzword of the decade' to denigrate the field of deep learning. I am using it to emphasize the op's shallow reference to the field.

boyobo··on Undergraduate Math Student Pushes Frontier of Graph Theory
This particular comment was probably downvoted because he basically just took the hottest buzzword of the last decade and inserted it with a very weak link to the topic at hand. You could copy and paste this comment to any article about any achievement and it would have the same relevance.

It is certainly not a “new way of thinking”. First of all, there is hardly any thought here. Secondly, “understanding deep learning mathematically” is a well known problem to mathematicians.

It is a comment that could have been generated by an (old, 2000s era) AI.

boyobo··on Plato at the Googleplex: Why Philosophy Won't Go Away
Why did you pick out that quote if it misrepresents the linked article?
boyobo··on Plato at the Googleplex: Why Philosophy Won't Go Away
I don't know about the first quote, but the second quote is not saying that the study of philosophy is useless. Just that it's useless for science.
boyobo··on DoorDash S-1
https://payup.wtf/blog/doordash-tip-theft

"That’s right — the more you tip in-app on DoorDash, the less DoorDash pays the worker."

boyobo··on Homotopy Type Theory (2012) [pdf]
> What percentage of coders do programming on a turing tape? Is this partial evidence that turing tapes are trash? Does that question even make sense? Yes it is. Turing machine models are very limited, and a programme to let us achieve the things we can do with Turing machines (mainly runtime analysis) with a better model (i.e. a lambda-calculus style model) is a very good idea.

What you wrote is a different justification for why turing tapes are worse than lambda calculus. It has nothing to do with the number of people programming on turing tapes, which is the argument that I was responding to. I could easily have used 'lambda calculus' instead of 'turing tape' above. Most people do not code in the lambda calculus. They write haskell or javascript or whatever.

It doesn't mean that the lambda calculus is trash. Likewise, most mathematicians don't work directly with ZFC. Doesn't mean ZFC is trash.

> I'd be equally interested in a programme of doing metamathematics in some non-category-theoretic model that was still "normal" mathematics in the same way that category theory is (and ZFC isn't).

My point is that almost all pure math (e.g: linear algebra, topology, differential geometry, category theory, group theory) is already metamathematics. Of course, there is a spectrum of 'meta-ness' but I think this is a continuous spectrum. I do not think there is a well-defined division between 'mathematics' and 'metamathematics'.

For example, can you give an argument for why, say, the irrationality of sqrt(2) is not 'metamath', yet godel's incompleteness theorem is 'metamath'?

boyobo··on Homotopy Type Theory (2012) [pdf]
> No one "does mathematics" in ZFC. How is this not partial evidence that ZFC is trash?

What percentage of coders do programming on a turing tape? Is this partial evidence that turing tapes are trash? Does that question even make sense?

> I don't expect this to be solved now (tooling, as per above), but mathematicians should learn more category theory now as that works just fine pencil paper and brain. When the type theoretic tooling is ready they will be ready.

The abstractions of category theory are useless in many areas of mathematics. Prime example: PDEs.

Laypeople think that category theory is the 'ultimate math' because they hear that it provides bridges or analogies between different areas of math. Perhaps programmers are especially prone to this because category theory does have some applications to programming.

The thing is, almost all of pure math is itself is a bridge between different areas of math. Some of these areas are bridged by category theory, some are bridged by other kinds of math, which have less catchy names.

boyobo··on Homotopy Type Theory (2012) [pdf]
Now I'm not sure what your point is. Are you suggesting that HoTT is to python as ZFC is to turing machine tape?
boyobo··on Homotopy Type Theory (2012) [pdf]
That's a flawed analogy. Mathematicians do use 'higher level languages', that's precisely why most of them don't care about HoTT vs set theory. Just like a web dev usually does not care about the instruction set of the processor.
boyobo··on Homotopy Type Theory (2012) [pdf]
You don't need anything like HoTT to start using multi-letter variable names.

E.g. https://mitpress.mit.edu/books/functional-differential-geome...

boyobo··on Advice to my young self: forget side projects and focus on your job
Do you understand the concept of correlation?

"Usain bolt won the olypmic gold medal many times (n=8).

If winning the gold medal was so rare, what are the odds that people like Usain Bolt exist?"

boyobo··on Advice to my young self: forget side projects and focus on your job
It's certainly different from what seems like the standard usage in the past few years, but I woudn't say it's a misuse. Here's is google's dictionary definition

"a special right, advantage, or immunity granted or available only to a particular person or group."

In this case, the "advatange" would be 'able to find job without going through recruiter' and the 'particular person or group' would be 'the group of people who (through their hard work or otherwise) are sufficiently talented/and or secure enough in their career'

Anyway it's sad this this word has such a negative smell attached to it now, thanks to people using it to shame people on the opposing side of internet arguments.

boyobo··on Advice to my young self: forget side projects and focus on your job
> However, if it was such a rare thing, what are the odds that someone like me would exist?

Someone wins the lottery every week. What are the odds of winning the lottery? Is playing the lottery a good strategy to make money?

boyobo··on Advice to my young self: forget side projects and focus on your job
I think people are using the word in different ways. The person you are responding to is using it as a description of the current state.
boyobo··on Google Interview Questions Deconstructed: The Knight’s Dialer
https://ibb.co/BGj5nDn

Consider the following graph. The nth fibonnaci number is the number of possible walks from n to 1.

(I made a mistake in the picture, there should be an edge from 2 to 1).

boyobo··on Look ma, no mouse: Vimium
Thank you!
boyobo··on Look ma, no mouse: Vimium
Does anyone know of a program for mac which allows you to type using Vim input?

Of course it's probably too hard to make it compatible with all the different types of text boxes, so I'm envisioning a shortcut that you can press, which brings up a small editing window, where you can use vim commands, and then you can copy and paste into whatever text field you want.

boyobo··on Mathematicians should stop naming things after each other
Any name given to object is necessarily going to be an incomplete description of said object. It's a tradeoff between the length of the description and the precision of the description. If you want to know what the object does you can look up its definition.
boyobo··on Cloth masks do protect the wearer
Why call it 'natural selection' then. That's just 'selection'.
boyobo··on Entropy explained, with sheep (2016)
But are those the only 6?
boyobo··on Entropy explained, with sheep (2016)
Great article. Can energy be explained in a similarly simple fashion? I'm pretty comfortable with probability theory so this entroppy explaination makes sense, but I still don't understand what energy is.

Also, who determines what a 'macroscopic variable' is? Why do there only seem to be 3 for gassess (V, T, P?)

boyobo··on An Introduction to Godel's Theorems (Second Edition) [pdf]
Here is a nice, short proof, utilizing the conceptual framework of "Computation".

https://www.scottaaronson.com/incompleteness.pdf

See chapter 3.

boyobo··on Math Overflow users resolve PhD thesis crisis
I mean, maybe they need to exponentiate the bound or something. e.g. 2^(4n) is much much much worse than 2^n.

The sentence did strike me a little wierd though.

boyobo··on Storytelling Tips for Technical Interviews
What are you aiming for instead of Amazon? (I am an outsider to the industry and I am curious).
boyobo··on The social side of science seen in the research on programming language quality
I wonder why you decided to contrast programming and programming languages with mathematics. Your second sentence makes perfect sense if you replace programming with math.
boyobo··on The social side of science seen in the research on programming language quality
You can say the exact same thing about mathematics.
boyobo··on Is the room open?
Not really sure what your argument is. But it’s wrong, because n=4 is a counterexample. The factors are 1,2 and 4. This is an odd number of factors.

Edit: it seems you are talking about 'The number of factors in the prime factorization of n'. This is not really relevant to the question posed in the submission.

Page 1 of 2Next →