1921
Calculating the intersection area of 3 or more circles
While attempting to learn Javascript and D3.js a couple months ago, I wrote a little library for displaying area proportional venn diagrams .
New
The latest blog posts to take off on Hacker News. 2,391 posts.
1922
1923
Top mathematical achievements of the last 5ish years, maybe
I have recently been going through my book Maths 1001 making updates for a forthcoming foreign edition (of which more in future). So I have been looking over mathematical developments since approxi…
1924
Breaking the Zyzzyva encryption
The article here sums up pretty well the debacle that North American tournament Scrabble players have been faced with since the…
1925
Clifford Algebra: A visual introduction (2014)
Clifford Algebra, a.k.a. Geometric Algebra, is a most extraordinary synergistic confluence of a diverse range of specialized mathematical fields, each with its own methods and formalisms, all of wh…
1926
Algorithmic surrealism: A slow-motion guide to high-frequency trading
Please note: Part 1 of this essay appeared in the Feb 2015 edition of Contributoria . It is published and modified here under a...
1927
1928
What the Next Generation Needs Is Math, Not Programming
It is the intelligent analysis of information that would be critical in a decade from now.
1929
Is there such a thing as half a derivative?
The original question was: Another one of those questions of the type “does this make sense”. You have first derivatives and second derivatives. f'(x), f”(x) or sometimes dy/dx …
1930
John and Alicia Nash, 1928,1933-2015
Our condolences Awesome Stories source John Nash and his wife Alicia were killed in a taxi accident on the New Jersey Turnpike Saturday afternoon. They were on their way back from Norway where he a…
1931
Elliptic Curve Cryptography: A Gentle Introduction – Part II
In the previous post , we have seen how elliptic curves over the real numbers can be used to define a group. Specifically, we have defined a rule for point addition : given three aligned points, their sum is zero ($P + Q + R = 0$). We have derived a geometric method and an algebraic method for computing point…
1932
NSA in P/poly: The Power of Precomputation
Even after the Snowden revelations, there remained at least one big mystery about what the NSA was doing and how. The NSA’s classified 2013 budget request mentioned, as a priority item, R…
1933
About the supposed factoring of a 4096 bit RSA key
This blog is written by Hanno Böck. Unless noted otherwise, its content is licensed as CC0 .
1934
Elliptic Curve Cryptography: a gentle introduction
Those of you who know what public-key cryptography is may have already heard of ECC , ECDH or ECDSA . The first is an acronym for Elliptic Curve Cryptography, the others are names for algorithms based on it.
1935
1936
Stephen Wolfram, A New Kind of Science
Attention conservation notice : Once, I was one of the authors of a paper on cellular automata . Lawyers for Wolfram Research Inc. threatened to sue me, my co-authors and our employer, because one of our citations referred to a certain mathematical proof, and they claimed the existence of this proof was a trade secret…
1937
Wolfram Language
Transcript of Stephen Wolfram's talk at SXSW 2015 on the present and future of computing: Wolfram Language, image recognition, language-design philosophy, tweetable programs, computational thinking for kids, natural language as input, symbolic programming, deployment, automation of programming, Internet of Things…
1938
Quadratic Voting (2014)
Glen Weyl has uploaded a new version of his paper, Quadratic Voting (written with Steven Lalley), to SSRN, which now includes the completed proofs. Quadratic voting is the most important idea for l…
1939
Energy Is Not Conserved (2010)
I’ve been meaning to link to this post at the arXiv blog , which is a great source of quirky and interesting new papers. In this case they are pointing to a speculative but interesting paper by Martin Perl and Holger Mueller, which suggests an experimental search for gradients in dark energy by way of atom…
1940
If 1+x is 1, how much is 1-x?
► Versión en Español (The title should be "if (= (+ 1 x) 1), how much is (- 1 x)?", but ...) Toy floating point Mathematically, if we...
1941
Chord progressions of 25,000 songs
Systems thinker who ended up in data. Mostly working out why organisations can't answer their own questions.
1942
Finding an Optimal Keyboard Layout for Swype
An overview of my work on optimizing phone keyboard layouts for Swype and T9. There's some interesting history here as well as a novel simulation-based approach to keyboard optimization.
1943
Math for eight-year-olds: graph theory for kids
This morning I had the pleasure to be a mathematical guest in my daughter’s third-grade class, full of inquisitive eight- and nine-year-old girls, and we had a wonderful interaction. Followin…
1944
Deep Learning, NLP, and Representations
neural networks , deep learning , representations , NLP , recursive neural networks
1945
12-minute Mandelbrot: fractals on a 50 year old IBM 1401 mainframe
When I found out that the Computer History Museum has a working IBM 1401 computer [1] , I wondered if it could generate the Mandelbrot frac...
1946
Planets in the Fourth Dimension
You probably that planets go around the sun in elliptical orbits. But do you know why? In fact, they’re moving in circles in 4 dimensions. But when these circles are projected down to 3-dimen…
1947
1948
Lint for Math
Can we remove simple errors from math proofs? simple-talk interview source Stephen Johnson is one of the world’s top programmers. Top programmers are inherently lazy: they prefer to build too…
1949
Number of legal 18x18 Go positions computed. One more to go
L19 = 208168199381979984699478633344862770286522453884530548425639456820927419612738015378525648451698519643907259916015628128546089888314427129715319317557736620397247064840935
1950