During his fieldwork, Claude Lévi-Strauss studied the customs of certain tribes and explored the subject with the support of André Weil, a renowned mathematician and one of the founding members of the Bourbaki group.

André Weil (1906–1998).

Through this collaboration, he notably used group theory to reveal the existence of rules governing kinship: these concern marriage (see Tangente 135, 2010) and the division of the population into disjoint groupings, which some ethnologists call clans. This is the case among the Kariera Aboriginal people of Western Australia.