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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

Kovsie singing sensation releases debut album
2017-02-16

Description:Hailey Clark, Deurmekaar Tags: Hailey Clark, Deurmekaar longdesc=

Hailey Clark, musician and
third-year BA Drama and
Theatre Arts student at the
University of the Free State.
Photo: Sonelle van Wyk.

Music was always something this singing sensation wanted to do from a very early age.

Sonet du Plessis, more famously known by her stage name, Hailey Clark, is a third-year BA Drama and Theatre Arts student at the University of the Free State (UFS). Her electronic pop debut album, titled Deurmekaar, was finally launched after a year of hard work and sacrifice.

Success in English and Afrikaans

Hailey, whose album features Afrikaans and English songs, says her music is influenced and inspired by a variety of local sounds and artists. “Dirk van der Westhuizen and Refentse – a new and upcoming artist – are two of the locals I look up to,” she says.

Reaching success at such a young age is the result of setting goals and achieving them. “Success is when you grow as a person and an artist in your music. You need to enjoy every moment of what you do and share it with other people,” Hailey says.

Future music producer and actress

With a bright future ahead of her, Hailey wants to become a full-time musician, but also wants to focus on acting, especially in films. “I want to perform as much as possible and hopefully become a music producer. I also have plans to do some acting as well.”

For all those who dream of becoming a musician, it’s hard work, Hailey says. “You have to know it is something you want to do and you have to commit to it. If it is what you want, keep focused and surround yourself with positive and encouraging people.”

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