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A function f is said to have a lower bound c if c<=f(x) for all x in its domain. The greatest lower bound is called the infimum.

The motion along a phase curve as a function of time (Tabor 1989, p. 14).

The catacaustic of the quadrifolium with arbitrary radiant point is a complicated function. A few example are illustrated above.

A recurrence relation between the function Q arising in quota systems, Q(n,r)=Q(n-1,r-1)+Q(n-1,r).

A definition of a function using a contour integral. Schläfli integrals may be converted into Rodrigues representations.

Let a general theta function be defined as T(x,q)=sum_(n=-infty)^inftyx^nq^(n^2), then

A function f(x) is said to be square integrable if int_(-infty)^infty|f(x)|^2dx is finite.

A k-colored graph is a labeled k-colorable graph together with its coloring function (Finch 2003).

A hex number, also called a centered hexagonal number, is given by H_n = 1+6T_n (1) = 3n^2+3n+1, (2) where T_n=n(n+1)/2 is the nth triangular number and the indexing with ...

A double sum is a series having terms depending on two indices, sum_(i,j)b_(ij). (1) A finite double series can be written as a product of series ...