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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

UFS entomologists describe a new spider species
2014-02-19

 

It is about 3mm in size and almost looks like a ladybird, but this new spider is the cause of great excitement at the University of the Free State’s (UFS’s) Department of Zoology and Entomology.

The new species of spider, now known as Rhene amanzi, was recently described for the first time and was ‘introduced’ to other arachnologist at the recent congress of the African Arachnology Society at Amanzi Private Reserve.

Dr Charles Haddad, senior lecturer in the UFS’s Department of Zoology and Entomology, said they already stumbled upon the male spider in 2010 when a student was doing research at the reserve. After a very long process, the spider was described and a couple of weeks ago, whilst at the congress, they also found the female.

“Up to now we only know that the spider lives in trees in the Brandfort area. The range could be wider, but since it was only described recently, other arachnologists will only now be able to identify accurately.”

Dr Haddad says they still have to determine how many eggs the female is able to lay, what the spider’s life cycle looks like and what their habitual preferences are.

“What we do know is that it probably isn’t poisonous and that the spider imitates a ladybird in order to protect itself against predators.”

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