decreasing monotonically by degree

monotonically decreasing

monotonically decreasing sequence

monotonically function

non-monotonically decreasing

decreasing function

increasing function and decreasing function

monotone decreasing function

monotonic decreasing function

non-decreasing function

rigorous increasing decreasing function

delta function (=δ-function)

function， function key

Analgesia function and anti-inflammation function

calibration function or curve [function]

characteristic function (= eigen-function)

characteristic function [of meromorphic function]

characteristic function and type-function

dual function of smarandache LCM function