fiforpg

9 ms·

61.
by fiforpg 3y ago
Wasn't really following the subject, but amazed at how tendentious the writing here is. Starting with the title, unsubstantiated claims, really weird turns of phrase, etc. Here's an example: > not just common, it’s start-up g
62.
Dark matter's biggest competitor might just have been falsified [video](youtube.com)
2 points by fiforpg 3y ago|1 comments
63.
by fiforpg 3y ago
Given how fond the Egyptian royalty were of their incestuous lifestyles, it is rather surprising that their tombs still did not end up being the go-to reference for all kinds of nasty genetic deviations. On the other hand, this note does
64.
by fiforpg 3y ago
Very pretty. Looks like one of Gustave Doré's illustrations for Paradise in the Divine Comedy: https://commons.wikimedia.org/wiki/File:Dor%C3%A9,_Gustave_-...
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Melvyn Bragg Talks to Mishal Husain(bbc.co.uk)
2 points by fiforpg 3y ago|0 comments
66.
by fiforpg 3y ago
Complex numbers are algebraically closed, reals are not. This means, if you write a polynomial with complex coefficients, it will have (only) complex roots. Analogous statement for the reals isn't true.
67.
by fiforpg 3y ago
You have a point in that to understand any particular subject well, it makes sense to read more than one book on it, at least to compare the different perspectives. Also worth noting that Strang has a couple of similar linear algebra book
68.
by fiforpg 3y ago
About avoiding determinants to the degree that this book does: while I agree it makes sense to delay introducing them, the goal should not be avoidance but clarity. The way author has to bend himself backwards here when dealing with eigenva
69.
by fiforpg 3y ago
Yep. Huge kudos to the author for making it available, but the PDF does feel sloppy with all the bright colors and images. In science textbooks, less is more. Compare this to the very latest edition of Stewart's calculus, which now use
70.
by fiforpg 3y ago
What better hobby to pick for those cold winter evenings, than to do some integrals! Edit: I can recommend this book for a self-guided study https://archive.org/details/zeldovich-higher-mathematics-for... The author wa
71.
by fiforpg 3y ago
Qpdfview is my daily driver for reading documents on Linux. Supports tabs, search, highlighting. If you want something still more lightweight, Zathura would be the way to go. It can be a tad too minimalistic, but great for LaTeX with vimtex
72.
by fiforpg 3y ago
Yep. An obligatory hat tip to lervag — his vimtex plugin* is a beast. *Which you are most likely using, since it integrates with Sumatra out of the box. And with MuPDF. And Skim, etc. It's cool like that.
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by fiforpg 3y ago
> Chatgpt would have no problems introducing the well-ordered principle Yes, well, that is part of what I was trying to say. The statement of the principle is not important outside of the structure you are building when following one
74.
by fiforpg 3y ago
Establishing a proof of a statement in mathematics means giving a series of steps of the form A(1) && A(2) && ... && A(n) && B => A(n+1), where each of A(i) has been proved earlier, B is one of the axioms
75.
by fiforpg 3y ago
There are many different physics courses, so which one was that? In order not to sound solipsistic, I will admit that they all share the subject :P
76.
by fiforpg 3y ago
The big impact books tend to be the ones read in youth. One that I re-read many times was the biography of Robert Wood by William Seabrook (both really fascinating characters): Doctor Wood, Modern Wizard of the Laboratory For a more recen
77.
by fiforpg 3y ago
Nice construction. Took me a little while to figure out that by oriented ellipse you really mean a fixed curve in 3d, not just a fixed direction of the normal to the plane of the ellipse, which was my first reading. That way orientation tak
78.
by fiforpg 3y ago
I kind of like how certain statistics are observed in relation to a specific culture/country (Canada), a specific vaccine (COVID) in a specific range of years, whence broad conclusions are drawn, which apparently are expected to
79.
by fiforpg 3y ago
I am trying to think of a reason for why there are many articles announcing the start of a grand initiative, but few that would announce one coming to fruition. Can't quite put my finger on it.
80.
American Museum of Natural History to remove all human remains from display(nytimes.com)
8 points by fiforpg 3y ago|0 comments
81.
by fiforpg 3y ago
Human history neglects many bright minds, while showering praise on others, whose main achievement occasionally is just that — they managed to get their name attached to a discovery. On a less bitter note I would like to collectively nomina
82.
by fiforpg 3y ago
It is not that Einstein is overrated, but rather that many people entertaining the usual ideas about his genius are blissfully unaware of his contemporaries and their work: Poincaré, Lorentz, Minkowski. Then of course Newton had Hooke, who
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Tiling the plane with polyominoes is algorithmically undecidable (1970)(sciencedirect.com)
2 points by fiforpg 3y ago|0 comments
84.
by fiforpg 3y ago
If I understand correctly, the initial appeal goes back to the early days of measure theory. Say, a 2-dimensional set is cut parallel to y-axis, and the cuts all have length 1. If the x-coordinates of the cuts themselves have length 1, you
85.
by fiforpg 3y ago
Kakeya problem is a beautiful question, and Besicovitch's construction has been really useful in harmonic analysis (Fefferman's The multiplier problem for the ball is a classic example). Still, in the eyes of wider public it mus
86.
by fiforpg 3y ago
It turned out to be a nice little piece of fiction, thanks for posting! From comments in this thread I learn that it is written in the style called creepypasta . Not entirely familiar with the culture, but it felt similar to some indie hor
87.
by fiforpg 3y ago
It does not take a world war to destroy people's lives like that, unfortunately. That is, malevolence is not necessary, incompetence is enough. Both are abundant in autocratic, repressive societies, such as the Soviet Union in this cas
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by fiforpg 3y ago
Should we tell them about the library Genesis?
89.
An application of geography to mathematics: History of the integral of secant [pdf](fer3.com)
3 points by fiforpg 3y ago|0 comments
90.
by fiforpg 3y ago
There was a recent article (Sep 21) in Financial Times, claiming that the F35 stationed in the US were able to only fly in 55% of cases due to various maintenance issues. Maybe they should consider using runways after all :) Edit: found it,

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