1. References

In mathematics, in particular in the field of the representation theory of groups, a representative function is a function f on a compact topological group G obtained by composing a representation of G on a vector space V with a linear map from the endomorphisms of V into V 's underlying field. Representative functions arise naturally from finite-dimensional representations of G as the matrix-entry functions of the corresponding matrix representations.

It follows from the Peter–Weyl theorem that the representative functions on G are dense in the Hilbert space of square-integrable functions on G.

References

• Theodor Bröcker and Tammo tom Dieck, Representations of compact Lie groups, Graduate Texts in Mathematics 98, Springer-Verlag, Berlin, 1995.

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