Alden Mosshammer is Emeritus Professor of History at the University of California, San Diego. He has also taught at The Mercersburg Academy, Kenyon College, and Swarthmore College. He earned a BA in Classics and Philosophy at Amherst College and a Phd in Classics at Brown University. Professor Mosshammer has taught all periods of the ancient history of the Mediterranean world, as well as courses in Greek, Latin, Early Christianity, and comparative religion. He is especially well known for his work on Chronicles, Chronology, and Computus. His previous publications include The Easter Computus and the Origins of the Christian Era (OUP, 2008).

• 1: Historical Introduction


• 2: Editions and Manuscripts


• 3: The Letter and Prologue of Theophilus of Alexandria


• 4: Commentary on the Letter and Prologue of Theophilus of Alexandria


• 5: The Letter of Cyril to Theodosius II and the Prologue attributed to Cyril


• 6: Commentary on the Letter of Cyril and the Prologue attributed to Cyril


• 7: The Anonymous Text Ratio Solis uel Lunae


• Appendix 1: The 95-Year Easter Table of Cyril


• Appendix 2: The Roman 84-Year Cycle


• References

An edition of two foundational texts for understanding the nineteen-year Easter cycle of Alexandria prior to the computus developed by Dionysius Exiguus in 525, namely the Prologues de Pascha of Theophilus, Patriarch of Alexandria from 385 to 412, and his nephew and successor Cyril (Patriarch from 412 to 444).