Digital root number is the number mod 11 (Ɛ), for example, 1972 is 1 + 9 + 7 + 2 = 19 = 17 which is 1 + 7 = 8, while in decimal the root of the same number (3110) is 5; and in base 16 a digital root of a number is the number mod 15 (0xF), for example, 0x7DF is 7 + 13 + 15 = 35 = 0x23 which is 2 + 3 = 5, while in decimal the root of the same number (2015) is 8. Digital roots form an important mechanic in the visual novel adventure
Nth root and 1, "ω", "ω", ... "ω" are the "n"th roots of unity. For example, the four different fourth roots of 2 are In polar form, a single "n"th root may be found by the formula Here "r" is the magnitude (the modulus, also called the absolute value) of the number whose root is to be taken; if the number can be written as "a+bi" then formula_97. Also, formula_98 is the angle formed as one pivots on the origin counterclockwise from the positive horizontal axis to a ray going from the origin to the number; it has the properties that formula_99