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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

Researcher transforms despair into diamonds
2016-01-18

PhD candidate, Lerato Machetela and some members of the group Diamonds in the Rough having some fun between rehearsals.

Awash in hopelessness, substance abuse, violence, and sexual promiscuity. This is the lived reality of the youth in Jagersfontein. But now Lerato Machetela is using her research to change it.

As a PhD candidate in Trauma, Forgiveness, and Reconciliation Studies at the University of the Free State (UFS), Machetela assembled a group of 14 young men – ranging between the ages of 9 and 18 – who call themselves Jagersfontein’s Diamonds in the Rough. Combining elements from psychology, education, and entertainment, Machetela has established a platform that grounds these young ones adrift in circumstances. By means of song and dance, these young ones have become grounded through creativity.

While discussing what it means to be free in the new South Africa, Machetela asked the group to come up with a song similar to the struggle song, ‘Nelson Mandela usi litheli ixolo’.

Jagersfontein’s Diamonds in the Rough Researcher, Lerato Machetela, combines psychology, education, and entertainment to ground local youths through creativity.

The result: He’s a teenager, but he drinks Hansa.

“This then developed into a dance routine depicting what the youth is doing with their freedom,” Machetela says. With each beat of their boots and rhythmic clap of their hands, the group illustrates the ways in which the youth has constructed – and come to understand – their daily realities. “The routine includes the expression of alcohol and drug abuse, and ends of with the importance of education.”

Through the creative expressions of Diamonds in the Rough, Machetela is able not only to explore the reality of the youth in Jagersfontein, but also to investigate intergenerational trauma. “I am looking at whether there is a relationship between these young people’s current circumstances and the experiences of their parents’ generation during the apartheid years. That is, what sort of meanings do they construct as young, black South Africans growing up in the new South Africa?”

What started off as a research project is now rippling beyond academic spheres, though. The Free State Department of Sport, Arts, Culture and Recreation has taken note of this initiative. As a result, the group has already performed at the Bloem Show, International Museums Day, and Heritage Day celebrations, as well as at the Mangaung African Cultural Festival (MACUFE).  

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