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In set theory, a unary operation on set A is a function A->A. More generally, a unary operation is a function with exactly one operand, such as the factorial, square root, or ...

The word "surface" is an important term in mathematics and is used in many ways. The most common and straightforward use of the word is to denote a two-dimensional ...

A function is a relation that uniquely associates members of one set with members of another set. More formally, a function from A to B is an object f such that every a in A ...

The set A^2 of all ordered pairs of complex numbers.

A set of values of similar meaning obtained in any manner.

The kernel of a symmetric bilinear form Q:V×V-->R is the set Ker(Q)={v in V|Q(v,w)=0 for all w in V}.

A set of points which do not lie on any of a certain class of hyperplanes.

The problem of determining (or counting) the set of all solutions to a given problem.

The manipulation of Dehn surgery descriptions by a certain set of operations.

The Minkowski measure of a bounded, closed set is the same as its Lebesgue measure.