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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

Music builds bridges - Diva Mimi Coertse
2004-09-21

Music is not bounded by colour, religion, politics or time. It builds bridges. It reaches out to people’s hearts and feelings. Everyone understands the language of music. These were the words of the opera and chamber music diva, Mimi Coertse, who delivered the 34th C.R. Swart Memorial Lecture of the Faculty of Humanities at the University of the Free State. The theme of her lecture was Music as international language. Ms. Coertse said there are no boundaries to music. Different from the spoken word in drama, music can be understood by everyone. There are no boundaries in classical music – and specifically in opera. Developed nations adopted the Eurocentric art form as part of their culture. Examples are China, Korea and Japan where classical music became part of these counties’ national culture, she said. “Unfortunately, however, classical music is seen in many instances – and even in our country – as Eurocentric, but that is not the case. When you start analysing it, you will notice that our black choirs specifically sing opera in choir competitions. These choir competitions became a major industry. These choirs prefer to sing opera.” Ms. Coertse said music brings joy, pleasure, relaxations and healing. It moves into the inner chambers of people’s hearts. You cannot swear at someone in music of curse the. Music is sensual, emotional and very spiritual. God is the writer, man just the player.

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