Publicationes Mathematicae Debrecen appears quarterly and publishes original research papers on pure mathematical topics. It welcomes contributed papers that develop interesting, or important, new mathematical ideas and results or solve outstanding problems. All papers are refereed for correctness and suitability for publication.Publicationes Mathematicae Debrecen is covered by the Mathematical Reviews, Zentralblatt fur Mathematik, Scopus, the Web of Science, the Science Abstracts and the Science Citation Index.