On the Authorship Сьлание о празднице Пасхы Attributed to Athanasius of Alexandria
The author analyzes the Fourth Oratio against the Arians by Athanasius of Alexandria in Slavic translation of Constantine of Preslav. Assumptions are made on the principles of calculation of Passover, which – on the one hand are in line with tradition during the fourth century, and, on the other hand, there are arguments for possible intervention by Bulgarian author in the text to prove the purity of the Eastern tradition. In appendix the edition of the Slavic text of the Oratio is published for the first time (the copy of year 1489 in the manuscript ? 968, collection of M. Pogodin, RNL, St. Petersburg, f. 209r-222v).