1. Positions, roles, and clusters ¶

1.1. The Structureal Equivalence of Points ¶

1.2. Clusters: Agglomerative and Divisive ¶

1.3. Block Models: CONCOR and BURT ¶

1.4. Towards Regular Structural Equivalence ¶

1.5. Interlocks and Participations ¶

1.6. Links ¶