Linkage for mid-December

The number theory behind why you can't have both perfect fifths and perfect octaves on a piano keyboard (with bonus lattice quotient music theory link; G+)
Sad news of Rudolf Halin's death (G+)
Frankenstein vs The Glider Gun video (G+)
Günter Ziegler on Dürer's solid (WP; MF; G+)
Nature will make its articles back to 1869 free to share online, for certain values of "free" that you might or might not agree with (G+)
Albert Carpenter's polyhedron models (G+)
The only complete proof from Fermat and the gaps in arithmetic progressions of squares (G+)
Mark-Jason Dominus on how and why he negotiated with his book publishers to be able to keep a free online copy of his Perl book
Video on drawing mushrooms with sound waves (G+)
Senate staffer tries to scrub "torture" reference from Wikipedia's CIA torture article (G+)
Numberphile video on origami angle trisection (G+)
Video on the world's roundest object and why it was made (G+)
How much text re-use is too much? A statistical study of plagiarism on arXiv (via; G+)

Comments:

None: Text-reuse vs. plagiarism
2014-12-16T14:13:16Z

Your description of the last link disagrees with the authors of that paper. They specifically say that their paper is not about plagiarism.

11011110: RE: Text-reuse vs. plagiarism
2014-12-16T16:16:30Z

Well, it's about setting a baseline for how much copying occurs normally, so that normal copying can be distinguished from plagiarism. Therefore, the question I wrote in the link.