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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

Two UFS architecture students won prestigious PG Bison 1.618 Competition
2017-10-26

 Description: Bison read more Tags: : Stephan Diedericks, Department of Architecture, Margaux Loubser, Kobus du Preez, Zack Wessels, PG Bison 1.168 Competition 

At the PG Bison 1.618 competition awards ceremony
in Rosebank, were from the left:
Camrin Plaatjes from the University of KwaZulu-Natal;
Stephan Diedericks, winner of the competition;
and Margaux Loubser,
the second-place winner. Both Stephan and
Margaux are studying Architecture at the UFS.
Photo: Supplied



Food that reaches its sell-by date in supermarkets is usually disposed of, but has not yet reached its best-before date.  What happens to this food?  According to Stephan Diedericks, the answer to this is for this food to be repurposed.

Not only does Stephan want to prevent the waste of food – in a world where food security is a challenge – but he also won the prestigious PG Bison 1.618 Competition with his entry in which he suggests that gourmet meals be prepared from food that has reached its sell-by date, and then be served in the Delta Recycletorium. 

Students introduced to park lands in urban areas
Diedericks is a student in the Department of Architecture at the University of the Free State (UFS). Second-place winner in this competition was Margaux Loubser, also a UFS student. Another UFS student, Dehan Kassimatis, was a finalist. They received their awards at a ceremony in Rosebank, Johannesburg, earlier this month. 

The competition, now in its 24th year, was created to recognise the future interior and industrial designers, architects, and key decision-makers in the South African construction industry. It is known not only for the prestige it offers its winners, but also for the tradition-defying brief given to the students each year.

According to lecturers Kobus du Preez and Zak Wessels, in the Department of Architecture, the competition introduced the students to parklands in urban areas. He quotes the competition brief: “Rural to urban migration with the development of commercial and residential property elevates the importance of parklands within cities, in creating a refuge from the hustle of daily life.  These areas are leveraged to encourage healthier living, community interaction and environmental awareness.”

Learning experience more important than prizes
The site that was the focus of the competition is the Environmental Centre, Delta Park Heritage Precinct in Johannesburg. Students needed to transform this old building into a vibrant gastronomic restaurant. “The theme and style of the restaurant was for the student to choose,” said Du Preez. 

Loubser called her restaurant Rooted – a wholefood restaurant.  She was influenced by the geometries of the original Art Deco building. Rooted articulates and integrates the space between nature and the building.  Similar to an Art Deco painting or poster, the landscape is abstracted into terraces which are used to grow vegetables organically.  Vertical green screens soften the divide between the building and its surroundings and it provides shade.

“Our students took their clues from the existing environment and integrated it with a single idea, an abstract concept, which impressed the judges,” Du Preez said. 

Although this is a competition that is well reported in the industry press, Du Preez and Wessels agree that the learning experience for students is much more important than winning the contest. The competition’s brief aligned well with the Department of Architecture’s learning content with its urban focus.

Jacques Steyn, a UFS architecture student, came third in the competition in 2015.

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