graycat

126 ms·

811.
by graycat 5y ago
On choosing colors, I might remind designers that about 25% of males are partially red-green color blind. They can easily distinguish fire engine red from emerald green, but otherwise a lot of reds, greens, and browns look much the same.
812.
by graycat 5y ago
Your https://www.contrastrebellion.com/ has my thoughts exactly (gee, I'm actually not the only one!) except usually I'm not just thinking but screaming until I have a sore throat. So, finally I agree with th
813.
by graycat 5y ago
I'm in the US: Who is going to enforce a law to have a working kill switch ? Likely it will have to be only the states, not the Federal government. How many voters would be eager to have such a law enforced? Some states don't h
814.
by graycat 5y ago
Soooo, let's see, try to see what is going on. I want to start with two standard pieces of advice, (1) always look for the hidden agenda and (2) follow the money. Now let's see: First, as in this thread already, we know who put
815.
by graycat 5y ago
I wrote my Ph.D. dissertation in applied math with a Pentel 0.5 mm. Soooo, there's also a Pentel 0.7?? GOOD. Thanks!
816.
by graycat 5y ago
My view, from math, computing, and computer science is (1) that the author is being too critical and often throwing out a small but good baby with some not very dirty bathwater and (2) that he is not mentioning some larger problems, worse &
817.
by graycat 5y ago
Where? See my post to this thread at https://news.ycombinator.com/item?id=29198222
818.
by graycat 5y ago
> I've read that a handful of times (whenever trying to figure out where to put some new random thing), and still have never come to a clear conclusion. So, given some data, say a file and/or directory, maybe from saving a Web
819.
by graycat 5y ago
Anomaly: How can a thread quickly get a lot of points, many more points than posts? So, who is voting up points but not posting?
820.
by graycat 5y ago
The OP has: > The million-dollar question posed by P vs. NP is this: Are these two classes of problems one and the same? Which is to say, could the problems that seem so difficult in fact be solved with an algorithm in a reasonable am
821.
by graycat 5y ago
We think alike. Watch this space in coming months for announcement of a Alpha test of a solution. Code is running apparently as intended and currently am collecting the initial data, uh, a lot more than the 6 sites! Solution is novel in
822.
by graycat 5y ago
Compared with the OP and much of this thread, there is a simpler view: Here I outline Asset Bubbles, Fractional Reserve Banking, and the Money Supply 101: In the 1920s, the US blew a stock market bubble. Lots of people bought stocks on
823.
by graycat 5y ago
Students should not assume that all mathematicians try to learn all the material thoroughly. Instead, in practice, even among good mathematicians, there is a fairly wide range of how carefully they study and how well they learn some materia
824.
by graycat 5y ago
> old animal meat? In one of his books, Escoffier explained that in making beef stock get better flavor starting with the meat of old animals. Soooo, I considered that, and in NY thought of retired dairy cows so called around. I got t
825.
by graycat 5y ago
"Sometimes"? Yup! "Tedious"? Yup! Can use Dedekind cuts or maybe something called the normal completion , and especially the first is darned tedious! There is a good math writer G. F. Simmons, of Introduction to To
826.
by graycat 5y ago
Ah, in math writing, it's easy enough to say more and be not boring and at times be at least interesting, inviting, even exciting! Let's have some examples!! (1) Dimension. So, suppose we are in the first class in linear algebra:
827.
by graycat 5y ago
The referenced article has: "Wavelets came about as a kind of update to an enormously useful mathematical technique known as the Fourier transform. In 1807, Joseph Fourier discovered that any periodic function — an equation whose value
828.
by graycat 5y ago
Ulam has a result in measure theory the French mathematician LeCam called tightness . The result is in Patrick Billingsley, Convergence of Probability Measures , John Wiley and Sons, New York, 1968. The result was used in a course I took
829.
by graycat 5y ago
I went carefully, line by line, through the first, real , half of Rudin's Real and Complex Analysis . All the writing I've read by Rudin is very precise. Sometimes a reader might want an intuitive understanding of what is goi
830.
by graycat 5y ago
That sounds right.
831.
by graycat 5y ago
Another source is W. Rudin, Real and Complex Analysis .
832.
by graycat 5y ago
Clarify your meaning of "reductionist"?
833.
by graycat 5y ago
I read the article and didn't have your reaction! Or, I long since, for years, often had your reaction and finally for nearly all media gave up! Soooo, instead of your reaction I just backed off and decided to regard any and all sta
834.
by graycat 5y ago
There is a lot of discussion in this thread about intelligence, Hungarians, Jews, old central European schools and coffee shops, etc. In my experience, the main conclusion I come to is: Humans are super TOUGH to characterize, measure meani
835.
by graycat 5y ago
I have a program that old I just keep using and don't have "to bring it back to life": Given two text files A and B with the lines sorted in ascending order, write a file C with the lines in common between A and B. Sure, the
836.
by graycat 5y ago
There is an explanation using some old stereotypes, to connect with others: Men share their knowledge and ideas. Women share their emotions and feelings.
837.
by graycat 5y ago
Thanks for the offer. Before my Ph.D., I had a good career going, non-academic. At times, math was a help, so I got a pure/applied math Ph.D. But I never had any intention of being a professor; I got the Ph.D. to help the good career
838.
by graycat 5y ago
I've never seen anyone be 10X better than, say, average consistently over a long period of time. But I've been 10X better than apparently average a few times a few weeks at a time. Uh, part of the reason for a few weeks at a time
839.
by graycat 5y ago
Good, fast view of scenario aggregation. The idea is powerful, not just a heuristic, and from R. T. Rockafellar. I didn't want to publish my dissertation because that would be like giving it away for free. Instead I wanted to sell it
840.
by graycat 5y ago
The basic idea is dirt simple. After that, apparently the OP has an overview. After that, the math gets quite pure . E.g., the Markov assumption is that in the underlying process, the past and future are conditionally independent given th

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