In group theory, a branch of abstract algebra, a character table is a two-dimensional table whose rows correspond to irreducible group representations, and w... More

In mathematics, a character group is the group of representations of a group by complex-valued functions. More

An indicator species is any biological species that defines a trait or characteristic of the environment. More

In mathematics, a character is (most commonly) a special kind of function from a group to a field (such as the complex numbers). More