(mathematics) A formula used in the min-max theorem to find exact eigenvalues, and in eigenvalue algorithms to obtain an eigenvalue approximation from an eigenvector approximation; it has applications in quantum mechanics.

plural of Rayleigh quotient

(mathematics, given some set and an equivalence relation on that set) the set consisting of all equivalence classes

(biology) Relative brain size measure defined as the ratio between observed to predicted brain mass for an animal of a given size, based on nonlinear regression on a range of reference species.

plural of encephalization quotient

plural of quotient map