Reciprocal Fibonacci Constant is a constant that is the sum of the reciprocals of Fibonacci numbers. It can be expressed as 1/1 + 1/1 + 1/2 + 1/3 + 1/5 + 1/8 + 1 / 13. It is denoted using the symbol ψ and can also be termed as Prévost Constant. Paul Erdős, Ronald Graham, and Leonard Carlitz, speculated that ψ is an irrational number and it was proved by Richard André-Jeannin.

Reciprocal Fibonacci Constant is a constant that is the sum of the reciprocals of Fibonacci numbers. It can be expressed as 1/1 + 1/1 + 1/2 + 1/3 + 1/5 + 1/8 + 1 / 13. It is denoted using the symbol ψ and can also be termed as Prévost Constant. Paul Erdős, Ronald Graham, and Leonard Carlitz, speculated that ψ is an irrational number and it was proved by Richard André-Jeannin.