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Penrose tiles to trapdoor ciphers ... and the return of Dr. Matrix

Martin Gardner

Buy this book at Amazon.com or try Amazon.co.uk in England, Amazon.ca in Canada, Amazon.de in Germany, Amazon.fr in France, Amazon.it in Italy, Amazon.es in Spain. ASIN=0716719878, Category: Mathematical Recreation, Language: E

Gardner introduces us to Conway's Surreal Numbers, Mandelbrot's Fractals, and Smullyan's Logic Puzzles.