Culen of Scotland (also called Cuilean and Colin) was king of Scotland from 966 to 971. He was the son of King Indulf, and the third cousin of the previous king Dubh and of his successor Kenneth II. He was slain by the Britons of Strathclyde.
... group
In mathematics, a permutation group is a group G whose elements are permutations of a given set M, and whose operation is the composition of permutations in G ...