Functiones et Approximatio, Commentarii Mathematici is a mathematical journal edited by the Faculty of Mathematics and Computer Science of Adam Mickiewicz University since 1974. The journal publishes original papers in mathematics, with special attention to analysis (in a broad sense) and number theory. Four issues forming two volumes of Functiones et Approximatio are published each year. They apear electronically in March, June, September and December. Manuscripts should be directed to the editorial office or to any member of the editorial board. Electronic submission is preferred.