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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

NSH breaking the cycle of poverty
2015-09-28

In was a joyous occasion for the Hlomuka family when their last-born walked across the stage to receive her degree. Spontaneous ululating sounded from the crowd as Nozipo Hlomuka knelt before the Chancellor of the University of the Free State (UFS), Dr Khotso Mokhele, who conferred her degree.

“At that moment, I thought ‘this is really and finally happening’,” says the young teacher from Qwaqwa, who received a B Ed degree at the spring graduation.

At that moment time stood still for Nozipo, who once believed that, because of financial difficulties, this day would never come.

Across our three campuses, there are many students in similar positions to Nozipo. As many as 60% of students on our campuses are food-insecure, and suffer from hunger. The No Student Hungry Bursary Programme as established in 2011 to provide food-insecure students with a modest food bursary.

In 2014, just when Nozipo thought she could no longer continue studying, she became the recipient of an NSH-bursary.

Although receiving a degree is a huge achievement for Nozipo, her parents, too, were overcome with emotion, to see the first of their five daughters reach this academic milestone. Having only finished grade 8, Mrs Notula Hlomuka, Nozipo’s mother, says it was important for her to see her children finish school, at least. Mrs Hlomuka sold fruit and vegetables which provided the family’s only income.

“It was not always easy. It was never easy. Sometimes, there was no money and not enough to eat, and your children must go to school hungry. We could not afford new clothes for all the children, and the school uniforms were handed down to the younger sibling ending with Nozipo. Those were difficult days. It’s over now. God provided.”


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