In mathematical finite

group theory In abstract algebra, group theory studies the algebraic structures known as group (mathematics), groups. The concept of a group is central to abstract algebra: other well-known algebraic structures, such as ring (mathematics), rings, field ...

, the vertex of a representation of a finite group is a subgroup associated to it, that has a special

representation Representation may refer to: Law and politics *Representation (politics), political activities undertaken by elected representatives, as well as other theories ** Representative democracy, type of democracy in which elected officials represent a ...

called a source. Vertices and sources were introduced by .

References

* Representation theory Finite groups {{abstract-algebra-stub