PENROSE TILES TO TRAPDOOR CIPHERS

Penrose Tiles to Trapdoor Ciphers by Martin Gardner

The MAA is proud to reissue Martin Gardner's Penrose Tiles to Trapdoor Ciphers, printed with a new bibliography and a postscript from the author. Penrose Tiles assembles a collection of Gardner's "Mathematical Games" columns from Scientific American that include many of the problems, puzzles and paradoxes that have earned him a reputation as a master mathematical magician. Included here are chapters on Conway's surreal numbers, Mandelbrot's fractals, and Smullyan's logic puzzles, as well as puzzlers dealing with hyperbolas, negative numbers, pool-ball triangles, and Penrose tiles and trapdoor ciphers. And of course, you can read of the return of Dr. Irvine Joshua Matrix, (famed numerologist and CIA operative), one of Martin Gardner's oldest fictional friends.