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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

A guide and a friend
2016-12-12

Description:Khothatso Mokone  Tags: Khothatso Mokone  longdesc=

Louzanne Coetzee and Khothatso Mokone.
Photo: Charl Devenish

Behind every successful Paralympic athlete is a guide, and behind blind athlete Louzanne Coetzee is none other than former Kovsie student Khothatso Mokone.

Mokone, who is a sports journalist and freelance photographer, says he is not entirely sure that his busy schedule is very balanced, but he tries to ensure he squeezes as much as possible into his day. One thing he always makes time for is his training. “As a young person, I try to take every opportunity that comes my way,” he says.

This young runner, who has been Coetzee’s guide for the past eight months, says that every race they have run together thus far has always been better than the last. “The partnership grows harmoniously every day. We talk about almost everything there is, not only running,” Mokone says.

Mokone guided Coetzee in the 1 500m of the Paralympics in Rio de Janeiro in September this year when she was disqualified. 

Mokone, who loves comedy and Dubai, is inspired by SAfm journalist and presenter Ashraf Garda. “He talks a lot about current issues that affect our country and I like his style of presenting. He is a good orator.”

Something people may not know about him is that he always walks around hopeful that the best is yet to come. “When I walk down the street, I walk with confidence and people think I have made it in life not knowing that I only have hope for a better tomorrow,” he says.

Although he is not yet as successful as he would like to be, Mokone encourages the youth to “open their eyes and ears to set realistic goals and work with patience to achieve each goal, whether short or long term”.

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