Viewing profile — kurlberg

It's complicated. :-) There is a nice picture of the "best" choice for different ranges of sizes of numbers to be multiplied at http://gmplib.org/devel/log.i7.1024.png More context…

"Learning styles" might be a myth. Eg, see Learning Styles: VAK Doesn't Exist (Here's What Research Actually Shows) https://www.structural-learning.com/post/learning-styles-myt... …

Even Terry Tao struggled at times: "When I was a graduate student in Princeton, Tom Wolff came and gave a course on recent progress on the restriction and Kakeya conjectures, start…

There is a joke saying "a mathematician says X, writes Y on the board and means Z". The really amusing(?) thing is that other mathematicians still (sort of) perfectly understands Z…

Where?

There is a cute argument (I think it is due to Erdos) that, asymptotically, 0% of the integers in [0,n^2] appears in the "n by n multiplication table": By Erdos-Kac, almost all int…

I had the same impulse (or at least copy.fail inducing many to upgrade at the same time.) However, it might be a "pro-Iran hacktivist group" according to https://www.theregister.co…

Convolution alone does not smooth. Eg consider a random variable supported on the pts 0 and 1 (delta masses at 2 pts.) No matter how many convolutions you do, you still have suppor…

Read it as a young teenager, can recommend.

This has been discussed on HN some times before. User xornot looked at the zfs source code and debunked "faulty ram corrupts more and more on scrub", for more details see https://n…

I don't think this is entirely due to Wozniak. Early "home" computer systems were based on connecting cards to a bus (eg the S-100 bus), eg. with one card supporting the CPU, anoth…

Fun historical fact: knot theory got a big boost when lord Kelvin (yeah, that one) proposed understanding atoms by thinking of them as "knotted vortices in the ether".

If you have a child who likes math I highly recommend "Really Big Numbers" by Richard Schwarz. Tons of nice illustrations on how to "take bigger and bigger steps". "Infinity is far…

I recently got into making some sort of budget hifi setup, and found audiosciencereview.com quite helpful - a good amount of reviewed gadgets with focus on measurements. Ended up w…

I have used merlin for quite a while, mostly happy (except for some security holes...) However, once asus drops support for older devices (e.g. rt-ac68u and rt-ac86u), merlin might…

Based on reddit [1] and other some other recommendations I got an asus ax4200 and put openwrt on it. I'm fairly happy, but some people have run into connection dropping (possibly d…

PS: if you're interested in multiplying "ludicrously large numbers", Harvey and van der Hoeven had a nice breakthrough and got multiplication down to "FFT speed" (n*log(n)), see ht…

There is a nice picture of the "best" for different ranges of sizes of numbers to be multiplied at http://gmplib.org/devel/log.i7.1024.png More context and explanation can be found…

Check out "Diamond Age" by Neal Stephenson.

It's very inefficient, both on terms of runtime and in terms wasted entropy.

This has been discussed on HN some times before. User xornot looked at the zfs source code and debunked it, for more details see https://news.ycombinator.com/item?id=14207520

Yes, it has uses. E.g., see Kahan's "Branch Cuts for Complex Elementary Functions, or Much Ado About Nothing's Sign Bit", copy available at https://people.freebsd.org/~das/kahan86b…

Years ago I saw it at: https://www.truenas.com/community/threads/ecc-vs-non-ecc-ram... (the gist of the scary story is that faulty ram while scrubbing might kill "everything".) How…

There is an extremely nice "Digital show and tell" video by Monty at https://xiph.org/video/vid2.shtml (part 1 at https://xiph.org/video/vid1.shtml is also very well worth watching…

I lived in the states for a while and missed Bregott. "Land o Lakes butter with canola oil" is a pretty good substitute.