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27 May 2022 | Story Leonie Bolleurs | Photo Charl Devenish
Prof Tomas Vetrik
Prof Tomas Vetrik, Professor in the Department of Mathematics and Applied Mathematics, recently delivered his inaugural lecture on the UFS Bloemfontein Campus.

Prof Tomas Vetrik, Professor in the Department of Mathematics and Applied Mathematics at the University of the Free State (UFS), recently delivered his inaugural lecture on the Bloemfontein Campus.

His research area is graph theory, and he mainly focuses on the degree-diameter problem, graph indices, and metric dimension of graphs.

Research focus

According to Prof Vetrik, mathematics was always his favourite subject in school. He also excelled in maths at university and decided to enrol for a course on graph theory while working on his master’s degree. “I liked it, so I also chose topics from graph theory for my PhD thesis,” he says.

In 2014, at the age of 32, he was appointed Associate Professor at the UFS, after postdoctoral research at the University of KwaZulu-Natal and working at the University of Pretoria. An NRF-rated researcher, he has published close to 75 research papers, a third of that as a single author in some of the most well-known journals in his area. Moreover, he was also research supervisor of three PhD and three master’s students.

International collaborations

In the eight years since his appointment at the UFS, Prof Vetrik has made research visits to universities from 14 different countries that have invited him for research collaborations. 

“I am often overseas. I like working from different places. It is interesting to me, and it helps me to be productive,” says Prof Vetrik, explaining some of the inspiration behind his mathematical ideas.

In the next two years, he would like to study more general mathematical problems beyond his current research area.

He says he is addicted to his research. “It overshadows all my other interests.” 

On the rare occasion when he is not working on his research, Prof Vetrik states that he has to keep himself busy. Unable to relax and do nothing, he likes to do sports of some kind or to travel. 

“I am a simple person. I do not even have a TV at home. I use an old-fashioned mobile phone that cannot access the internet,” he says.


News Archive

Supplementum analyses the San origin of South African place names
2013-09-25

 

At the launch were, from the left: Prof Lucius Botes (Dean: Faculty of the Humanities), Christine van Deventer (SUN MeDIA), Prof Peter Raper (author), Prof Theodorus du Plessis (Head of Department: Linguistics and Language Practice), and Prof Dirk van den Berg (outgoing editor).
Photo: Jerry Mokoroane
25 September 2013

The Acta Academica Supplementum 2012 (2), under the outgoing editorship of Prof Dirk van den Berg, was launched on 16 September 2013. The author, Prof Peter Raper, is one of the leading place-name experts in South Africa. The Supplementum analyses the San origin of South African place names whereby different layers of language contact are exposed. For example, Dipodi (previously Jakkalsdraai), is an adaptation of the original San name. The first ‘di’ is the added Sotho preposition. ‘Po’ is equal to the San word ‘po’ (jackal) and the last ‘di’ equal to ‘/gi’ (to bend). Prof Raper’s research indicates that many place names carry evidence of various language shifts. By analysing these language layers, different phases of language contact are exposed. This research is instrumental in the preservation of a unique aspect of the South African cultural heritage.

Prof Raper is since 2011 Honorary Professor: Linguistics, in the Department of Language Management and Language Practice at the University of the Free State. He is one of South Africa’s leading toponymists. The fourth edition of the New Dictionary of Southern African Place Names, with Dr Lucie Möller and Prof Theodorus du Plessis as co-editors, is currently in the press. He is a member of the Commission for Toponymy of the International Geographical Union, as well as the Working Group for Toponymy of the International Cartographic Association, of which there are only ten members worldwide, and a member of the Editorial Advisory Board for the journal Names.

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