The author expresses deep gratitude to Robert E. Bradley, professor of mathematics at Adelphi University, for graciously dedicating so much of his time, patience, and knowledge in editing my translation of Servois' “Calendrier perpétuel” and providing general editorial comments for the entire manuscript.
Additionally, the author is extremely grateful to the referees for their many helpful suggestions and corrections.
About the Author
Salvatore J. Petrilli, Jr. is an assistant professor at Adelphi University. He has a B.S. in mathematics from Adelphi University and an M.A. in mathematics from Hofstra University. He received the Ed.D. in mathematics education from Teachers College, Columbia University, where his advisor was J. Philip Smith. His research interests include history of mathematics and mathematics education.