Structural endogamy is a network

Social network

A social network is a social structure made up of individuals called "nodes", which are tied by one or more specific types of interdependency, such as friendship, kinship, common interest, financial exchange, dislike, sexual relationships, or relationships of beliefs, knowledge or prestige.Social...

 concept that provides a means of finding the boundaries of endogamy

Endogamy

Endogamy is the practice of marrying within a specific ethnic group, class, or social group, rejecting others on such basis as being unsuitable for marriage or other close personal relationships. A Greek Orthodox Christian endogamist, for example, would require that a marriage be only with another...

 in a community, using simply the genealogical and marriage linkages. The concept is related to that of structural cohesion

Structural cohesion

Structural cohesion is the sociological conception of cohesion in social groups. It is defined as the minimal number of actors in a social network that need to be removed to disconnect at least two actors in the remaining group. It is thus identical to the question of the node connectivity of a...

. The examples are made with free tool Pajek. Another name for structural endogamy is (marital) relinking, which comes out of French social anthropology

Social anthropology

Social Anthropology is one of the four or five branches of anthropology that studies how contemporary human beings behave in social groups. Practitioners of social anthropology investigate, often through long-term, intensive field studies , the social organization of a particular person: customs,...

, and the study of how communities are formed through couples marrying who are already linked: linked, that is, by chains of kinship and marriage, as in circles of intermarrying families, or marriages between people with one or more ancestors in common (i.e., blood relatives, such as cousins). Many of the marriages represented in the Turkish nomads figure are with cousins, for example. But relinking also occurs without blood marriages, as in the example from the Mexican village of Belén Atzitzi-mititlán within Apetatitlán de Antonio Carvajal

Apetatitlán de Antonio Carvajal

Apetatitlán de Antonio Carvajal is a municipality in Tlaxcala in south-eastern Mexico.-References:...

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