Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In probability theory and statistics, the Zipf Mandelbrot law is a discrete probability distribution. Also known as the Pareto-Zipf law, it is a power-law distribution on ranked data, named after the linguist George Kingsley Zipf who suggested a simpler distribution called Zipf''s law, and the mathematician Benoît Mandelbrot, who subsequently generalized it. The distribution of words ranked by their frequency in a random text corpus is generally a power-law distribution, known as Zipf''s law.