Applied Mathematics
In a game proposed by J. H. Conway, a devil chases an angel on an infinite chessboard. At each move, the devil can eliminate one of the squares, and the angel can make a leap in any direction, covering a distance of at most squares.
Angel Problem
Fractal
Blog : Self-Description
September 7, 2010 — Jon McLoone , International Business & Strategic Development I am a big fan of Randall Munroe’s web comic strip xkcd . (Apparently I am not alone .) A while ago, Randall posted a strip with a self-referential chart of the amount of black ink in the image. If you have read my past blog items, you know I like recursive pictures . So I thought I would create a Mathematica version of this strip.
TED Math Talks