The 4th Ecumenical Council of Chalcedon in 451; its convocation and the authority of Pope Leo; the events of the council from its beginning to the fourth session (deposition of Dioscore, the reception of the Tomus ad Flavianum).

History of Doctrines II

• The theological School of Antioch: its early representants, the life and sigificance of Diodor of Tarsus
• The life, teaching and theological sigificance of Theodor of Mopsuestia
• The life, teaching and theological sigificance of John Chrysostom
• The Latin theological teaching before 431: Hilary of Poitiers; Jerome and the Vulgata; Ambrose of Milan
• The life, teaching and theological sigificance of Aurelius Augustinus
• The theological controversy of Alexandria and Antioch: Cyril of Alexandria and Nestorius; theological controversies and eclesio-political fights
• The 12 anathemas of Cyril, the Letter of Ibas of Edessa; the comparision of the christology of Cyril and of the antiochians
• The Council of Ephesus in 431 and its consequences
• The monophysite controversy; the life and theological importance of Theodoret of Cyrus; the Council of Constantinpole in 448; the Creed of Flavian; the persecution of the orthodox theologians
• Pope Leo I and his Tomus ad Flavianum; The "robber synod" of Ephesus in 449 and its consequences
• The 4th Ecumenical Council of Chalcedon in 451; its convocation and the authority of Pope Leo; the events of the council from its beginning to the fourth session (deposition of Dioscore, the reception of the Tomus ad Flavianum).
• The events of the Council of Chalcedon 451: from the fifth session to the end of the Council (the Definition of Chalcedon; the rehabilitation of Theodoret of Cyrus and of Ibas of Edessa; the Patriarchate of Jerusalem).
• The Canons of the Council of Chalcedon; Canon 28 and the growing authority of Constantinople (the new Rome)
• The sunset of the patristic age