Professor Sanne Ter Horst - Quaestiones Mathematicae

After starting at Quaestiones Mathematicae as editor in 2010, serving as associate editor from 2013 and finally as editor-in-chief since 2016, Professor Themba Dube from UNISA retired on 31 December 2022. He was succeeded by Professor Sanne Ter Horst from North-West University, who has been an associate editor with the journal since 2014.

During Prof. Dube's tenure as editor-in-chief, the journal saw many of its highlights, including a steady rise in numerous metrics and rankings, as well as a significant increase in the number of submissions. To deal with this increase, the number of issues per volume went up from six in 2015 to 12 in 2021.

Ter Horst is currently a Professor of Mathematics in the research entity of Pure and Applied Analytics at the Potchefstroom campus of North-West University. His own research can broadly be categorised under operator theory and matrix analysis, and he also has an interest in applications in linear system and control theory.

According to Prof. Ter Horst, Quaestiones Mathematicae has always been a journal that strives to publish work from the whole spectrum of mathematics, and it is important that we maintain this broad perspective and that we are aware of the currently relevant trends in mathematics. 

"It is important that, as a journal, we keep up to date with these developments and approach them proactively. We owe Prof. Dube a huge debt of gratitude for the excellent way in which he managed Quaestiones Mathematicae over the years. I will strive to maintain the standard that he set for the journal by ensuring that we keep our focus on publishing high- quality research and survey papers on relevant topics in all fields of mathematics," said Ter Horst.