Irrational number number to ratios of continuous magnitude. In his commentary on Book 10 of the "Elements", the Persian mathematician Al-Mahani (d. 874/884) examined and classified quadratic irrationals and cubic irrationals. He provided definitions for rational and irrational magnitudes, which he treated as irrational numbers. He dealt with them freely but explains them in geometric terms as follows: In contrast to Euclid's concept of magnitudes as lines, Al-Mahani considered integers and fractions as rational magnitudes, and square roots and cube roots as irrational magnitudes. He also introduced an arithmetical approach to the concept of irrationality, as he attributes the following to irrational
13: Fear Is Real 13: Fear Is Real 13: Fear Is Real is a 2009 American horror reality competition series which premiered on January 7, 2009. It follows a group of 13 contestants as they are trying to survive in a setting inspired by horror movies. On May 27, 2009, The CW canceled the series after one season. "13: Fear Is Real" was produced by Magic Molehill Productions, Inc. and Warner Horizon Television Inc. in association with Jay Bienstock Productions and Ghost House Pictures with executive producers Jay Bienstock ("Survivor", "The Apprentice"), Sam Raimi (the "Spider-Man" films, the "Evil Dead" films) and Robert Tapert