===List of primates===
The diptychs is a list of names used by an [[autocephalous]] church to commemorate the [[primate]]s of all the world's [[autocephaly|autocephalous ]] churches. These names in the diptychs are read liturgically by the deacon (and echoed by the choir) only at a [[Hierarchical Divine Liturgy]] celebrated by the Church's a [pPatriarchpatriarch]] or autocephalous primate.
The phrase ''inscribing of a bishop's name in the diptychs'' means that the church considers itself to be in communion with him, the removal of a bishop's name would indicate breaking communion with him.