(mathematics) A function yielding the sum of the divisors of an integer. It is denoted by the Greek letter σ (sigma).

(mathematics) An element of the range of a function. (Or, employing the "machine" metaphor, it is one of the "outputs" of a function.)

A supply of honey, often created as a subsidy for beekeepers, and/or the funds used to purchase that supply. / Alternative form of honeyfund

Synonym of onychomycosis

(chiefly mathematics) A theorem (or, in non-mathematical fields, a commonly accepted hypothesis) considered to be of central importance to a specified field.

plural of fundamental theorem

plural of funambulator

tightrope walker

(US, humorous, informal, dated) Goodbye; see you later.

(mathematics) Any of the elements of the Bloch space.