👉 In mathematics, a furan is a family of 6-ary ternary strings. Each string in this family represents an arithmetic operation, such as addition, subtraction, multiplication, or division, and it is represented by a single binary digit (0 or 1) for each position in the string. The family of furans can be defined recursively: if a string in the family can be expressed as a concatenation of strings from the same family, then it can also be expressed as a