keithalewis

6 ms·

31.
by keithalewis 2y ago
Do you have an example of a convertible bond?
32.
by keithalewis 2y ago
Try composing two distributions.
33.
by keithalewis 2y ago
Attention Everyone!!! We have just found our killer AI app!!! Just imagine, you no longer need to talk to friends, family, or waste time on social networks to get a list of books you are never going to read!!! I can't wait to start buy
34.
by keithalewis 2y ago
Doctor, it hurts when I do that.
35.
by keithalewis 2y ago
Name checks out.
36.
by keithalewis 2y ago
Here is a replacement for the Black-Scholes/Merton model: https://keithalewis.github.io/math/um1.html#black-scholesmer...
37.
by keithalewis 2y ago
f ↦ (x ↦ f (x x))(x ↦ f (x x))
38.
by keithalewis 2y ago
Techniques for safe garbage collection in C++: unique_ptr and right curly brace }. Linear types with delayed gratification.
39.
by keithalewis 2y ago
A simpler definition of a convex function f is f(x) = sup { l(x) | l <= f where l is linear }. If l <= f is linear then E[f(X)] >= E[l(X)] = l(E[X]). Taking the sup shows E[f(X)] >= f(E[X]).
40.
by keithalewis 2y ago
A semigroup is a set M and a function m: M x M -> M that is associative, m(a,m(b,c)) = m(m(a,b),c). Writing ab for m(a, b) this can be written a(bc) = (ab)c. A monoid is a semigroup with an identity e satisfying em = m = me for every m i
41.
by keithalewis 2y ago
You say that as if I give a shit about sanctimonious HN downvotes. :-)
42.
by keithalewis 2y ago
We're from the Government and we're here to help. You need a license to operate a backhoe, but not to write software.
43.
by keithalewis 2y ago
Far superior to the original article. But people seem to prefer ELI5 baby talk these days.
44.
by keithalewis 2y ago
It is not a requirement. Just a way to weed out people who think they are special snowflakes.
45.
Our New Copilot Overlord
1 points by keithalewis 2y ago|0 comments
46.
by keithalewis 2y ago
https://www.youtube.com/watch?v=CDeG4S-mJts&pp=ygUQSGl0bGVyI...
47.
by keithalewis 2y ago
Too many foot guns.
48.
by keithalewis 2y ago
Because it was designed by Linus to solve his problems, not ours.
49.
by keithalewis 2y ago
e is the unique real number satisfying 1 + x <= e^x for all x. 1 - x <= e^{-x} so e^x <= 1/(1 - x) for x < 1 (1 + x/n)^n <= e^x <= (1 - x/n)^{-n} for x < 1 Letting n go to infinity gives e^x = \sum_{n=0}^
50.
by keithalewis 2y ago
But never the end of clickbait.
51.
by keithalewis 2y ago
Microsoft seems to be purposely doing a poor job of integrating Python into Excel. It is a "give the monkey a banana" approach. With a rotten banana. They seem to be pouring money into LAMBDA.
52.
by keithalewis 2y ago
Worked with the Excel team on the 2007 beta. They want to do this too, but program managers give them a hard "No." If you touch even one thing there is a cascade of side effects that will drag you off the local maximum. The PMs ar
53.
by keithalewis 2y ago
It's only the most popular programming language in the world.
54.
by keithalewis 2y ago
There's got to be a pony in there somewhere, Linus wrote it! Amiright?
55.
by keithalewis 2y ago
User name checks out.
56.
by keithalewis 2y ago
That is not a textbook.
57.
by keithalewis 2y ago
Fair enough. I'm just verklempt about the plethora of purported tutorials that barely scratch the surface. Sit down with a textbook. Read it. Think hard and do the problems. Watching cartoon animations is not learning the subject. Excu
58.
by keithalewis 2y ago
Do you know understand how quoting works? You are supposed to use the words the person actually typed. Feel free to cite a textbook on Fourier analysis proving a result not contained in Rudin's text. Uhh.. here's your break. Put u
59.
by keithalewis 2y ago
This is how people who lived before you did it. It's math. You can just read what they had to say instead of pretending a YouTube video or comic is actual hard won knowledge. Nobody has anything more to say about Fourier series than wh
60.
by keithalewis 2y ago
The trip to the loony bin.

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