irrational number
real number that cannot be expressed as a ratio of integers
quadratic irrational
irrational root of a quadratic equation with integer coefficients
trigonometric number
irrational number produced by taking the sine or cosine of a rational multiple of a full circle
schizophrenic number
Irrational numbers which appear to be rational
reciprocal Fibonacci constant
real number, approximately 3.36, the sum of the reciprocals of the Fibonacci numbers
twelfth root of two
algebraic irrational number
prime constant
real number whose nth binary digit is 1 if n is prime and 0 if n is composite or 1
metallic ratio
generalization of the golden ratio; positive real number x such that x = n + 1/x, for a natural number n
golden ratio
ratio between two quantities whose sum is at the same ratio to the larger one
transcendental number
number that cannot be found as a result of an algebraic equation with integer coefficients
universal parabolic constant
the ratio, for any parabola, of the arc length of the parabolic segment formed by the latus rectum to the focal parameter; ln(1+√2)+√2
plastic ratio
unique real number solution to the equation x^3-x-1=0