Welcome. I am a lecturer (Professor Auxiliar) at the Department of Mathematics of the Faculty of Science of the University of Porto in Porto, Portugal. I am also a member of the editorial board of the International Electronic Journal of Algebra. and of the Mathematical Proceedings of the Royal Irish Academy.

My research interst lies in Ring and module theory, Hopf algebras and their actions on rings, Coalgebras and their relation to module theory and Algebraic Coding theory. You find a list of publication on this page (see also arXiv or AMS) as well as a list of students I supervised (see also Genealogy) and a list of events I helped organizing.

You find my papers also on arXiv, the latest preprints are the following:

Some identifier: MathSciNet ID: 641518/ ZMATH / Scopus Author ID: 14630520600/ Orcid ID: 0000-0003-2475-3448/ ResearcherID: D-1361-2010/ Research Gate

Ich suche allerlanden eine Stadt,

Die einen Engel vor der Pforte hat.

Ich trage seinen grossen Flügel

Gebrochen schwer am Schulterblatt

Und in der Stirne seinen Stern als Siegel.