cokernel

10 ms·

61.
by cokernel 11y ago
The function eval[1] evaluates a string as code. The special variable $_GET[2] contains HTTP GET variables, which may be freely set by a remote user. So if your PHP file executes eval($_GET['code']), then arbitrary folks can subm
62.
by cokernel 11y ago
Does Rosetta Code count?
63.
by cokernel 11y ago
This algorithm didn't appear out of nowhere. Maybe this page should mention the source? I had pictured this as being essentially Gauss's algorithm, but if Wikipedia is correct, this particular implementation is due to Tomohiko Sa
64.
by cokernel 11y ago
I thought there might be some interest in knowing how people who were in both the 1st and 5th Congresses voted on the Alien and Sedition Acts. This actually consists of four distinct acts, and I chose to focus on An Act concerning Aliens
65.
by cokernel 11y ago
Thanks, I've fixed it.
66.
by cokernel 11y ago
The 1st US Congress had 29 senators and 66 representatives (95 distinct people), not all simultaneously, while the 5th US Congress had 45 senators and 118 representatives (162 distinct people, as Andrew Jackson served as both a representati
67.
by cokernel 11y ago
The structure of Doron Zeilberger's proof of the Alternating Sign Matrix Conjecture is reminiscent of this, though possibly not directly inspired by it: http://www.combinatorics.org/ojs/index.php/eljc/art
68.
by cokernel 11y ago
I don't read the authors as saying that intellectual need is the only way to motivate. Rather, they're saying that regardless of motivation, students are unlikely to learn certain concepts unless they directly experience the need
69.
by cokernel 11y ago
Thanks for this comment. While trying to track down the source of the quote, I ran into this interesting, if a bit oddly formatted, blog post: http://publicnoises.blogspot.com/2009/02/aristotle-and-accur... There
70.
by cokernel 11y ago
Linguistic evolution is much like biological evolution in that there is no a priori direction for it to go. There is a sort of natural selection in that words that don't get used don't generally get passed on to the next generati
71.
by cokernel 11y ago
I notice that Sarsons's paper says on the very first page: "NOTE: Very preliminary – please do not cite without permission. Comments welcome." I wonder if Cowen sought permission or just ignored that sentence? I am aware tha
72.
by cokernel 11y ago
Is the thing I've overlooked that there are two As?
73.
by cokernel 11y ago
It's a nice interface. I'm glad arrow keys, the first thing I tried, work. But you're not going to trick me into looking for a sequence of moves that change the parity of the underlying permutation.
74.
by cokernel 11y ago
I wouldn't read this expecting a condemnation of (or evidence against) installing using RAM. It's a comedy of errors brought about by the hero's hubris (and tiredness). The author is not really suggesting that you should ne
75.
by cokernel 11y ago
Incidentally, 45% of 50 is not an integer. This makes me wonder how many books were actually tested. Or were they just rounding up from 44%?
76.
by cokernel 11y ago
The URL says "Harvard Law Library sacrifices a trove for the sake of a free database", and the title of the print article is "Sacrificing a Legal Trove for the Digital Age", so perhaps the submitter did not editorialize
77.
by cokernel 11y ago
Presumably they found it more important to preserve the pages than to preserve the volume binding. The FAQ for the linear book scanner indicates that Prototype 1 mangles pages in some way (tears or folds) in about 45% of books it scans. Mor
78.
Is It O.K. To Be a Luddite? (1984)(nytimes.com)
1 points by cokernel 11y ago|0 comments
79.
by cokernel 11y ago
I don't know why a theory has to be labeled "new" to be worth discussing. (I'm know I'm hyperfocusing on Shermer's phrase "a new theory", sorry.) Hoffman's argument is remarkably close to Planti
80.
by cokernel 11y ago
It took Wiles seven years to prove the thing (and the proof needed to be patched!), so I wouldn't be discouraged if it takes a while to understand. A nice thing about mathematics is, it waits for you. If you're interested in the
81.
by cokernel 11y ago
This analysis was written by Thomas M. Cooley, who was Chief Justice of the Michigan Supreme Court at the time. It was mentioned in passing in a Guardian article discussed here recently: https://news.ycombinator.com/item?id
82.
by cokernel 11y ago
A minor nit: Thomas Snell et al. v. The Atlantic Fire and Marine Insurance Company is the opinion which follows Thomas M. Cooley's opinion you are quoting here.
83.
Inviolability of Telegraphic Correspondence (1879)(archive.org)
29 points by cokernel 11y ago|10 comments
84.
Inviolability of Telegraphic Correspondence (1879)(archive.org)
1 points by cokernel 11y ago|0 comments
85.
by cokernel 11y ago
Thomas M. Cooley's 1879 analysis of privacy of telegraphic correspondence (the "hampered by fears" link in the Guardian article) is fascinating: https://archive.org/details/jstor-3303981/
86.
by cokernel 11y ago
I haven't tested this, but the package https://github.com/subokita/Robust-Text-Detection apparently implements methods described in the paper "Robust Text Detection in Natural Images with Edge-Enhanced Maxima
87.
by cokernel 11y ago
The article explains that these items can unexpectedly shed light on historical questions, giving as an example a letter from Marat that seemed to demonstrate he was not in an English prison at a time when most historians thought he was. It
88.
by cokernel 11y ago
As the article points out, the Mass Shooting Tracker tracks mass shootings (at least four people shot ), not mass murders.
89.
by cokernel 11y ago
I'm way out of date. The proof (discretized using hypermaps instead of graphs) was completely formalized in Coq in 2005: http://research.microsoft.com/en-us/um/people/gonthier/4colp...
90.
by cokernel 11y ago
The standard proof does use nodes and arcs (or vertices and edges, which I am taking to mean the same thing). A proper coloring must assign distinct colors to neighboring vertices, but this doesn't mean that vertices with the same col

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