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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

Physical Planning lives in recaptured space
2014-06-18

When the Department of Physical Planning decided on a new office premises, the team decided to tackle the project with an overarching theme – recycling.

It is important for Physical Planning to not only dictate to other departments on campus, but to set the example themselves,” says Nico Janse van Rensburg, Director: Physical Planning at the UFS. 

Recaptured space

New office space on campus is simply not available. It was therefore decided to recover space and a store room was identified. “Fortunately, the storage area had ceilings. However, it was dilapidated and was sagging all over. To divert attention from the ceiling, we painted it in a dark colour and the walls white.

“All wiring was also done superficially. It draws the attention away from the uneven surfaces and simplifies work on the wiring. Instead of trying to hide it, we made a focal point of it,” says Janse van Rensburg.

Recycled building materials

Lots of the building material that was used to convert the storage space into offices, was recovered from other building projects on campus. Material that would normally be discarded was utilised creatively to not only serve a practical purpose, but also an aesthetic one.

A laboratory basin was used as wash basin. Remaining parts of granite slabs from other sites were utilised as top for the basin. Existing toilets were also reused. To enhance the atmosphere, new taps in an affordable, but durable range were installed.

Recycled furniture

We rambled through every possible store room to find furniture. Tables were simply sanded and varnished and look better than new. Even the cabinet at the entrance was saved from wind and weather and reused.

Hot and smart

Only one screen wall was built. It was left in raw brick, unplastered and unpainted to contribute to contrasting textures. Existing walls were left painted or unpainted as it was before.

“The environment that was created breaks down several existing perceptions. Such as the perception that everything has to match; everything has to be plastered and painted and many others. This is an example of how different materials can be combined to create a lively environment.

“Staff members have already moved into their new offices and are very satisfied,” says Janse van Rensburg. 

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