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30 November 2021 | Story Leonie Bolleurs | Photo Supplied
Prof Johan Meyer, Senior Professor in the Department of Mathematics and Applied Mathematics, says he is looking forward to learning from others in the field during this collaboration.

What do trees, black holes, earthquakes, and time structures have in common? 

The answer to this question is that these, in one way or the other, form the focus of some of the abstracts delivered during the Annual Congress of the South African Mathematical Society. The society has as its main objective the advancement of mathematics in South Africa. 

The Department of Mathematics and Applied Mathematics at the University of the Free State (UFS), in conjunction with the South African Mathematical Society (SAMS 2021), is hosting the 64th Annual Congress of the society this week (29 November to 1 December 2021).

Prof Johan Meyer, Senior Professor in the department, says the congress, which is being conducted online, is focusing on all aspects of mathematics research, including history and teaching.

Learning from others in the field

The congress, which aims to share the latest research results in mathematics, will be attended by staff and students from universities across South Africa as well as abroad. “Anyone from the public is, of course, welcome to attend or even share their results if they are also involved in mathematics research,” adds Prof Meyer. 

He says that he is looking forward to learning from others in the field during this collaboration. 

The congress will include discussions on more than 120 abstracts, covering category theory, algebra, topology, logic; functional analysis and operator theory; finite groups and combinatorial structures; graph theory and combinatorics; lie symmetries and nonlinear differential equations; and applied and numerical mathematics.

Array of interesting topics presented

“It is important in many areas of science and engineering to predict and to simulate rare, random events, the occurrence of which may have negative or even catastrophic consequences. Examples include internet server overflows, mechanical breakdowns, floods, and financial crashes. Rare events can also have a positive effect, triggering for example chemical reactions or driving genetic evolution via random mutations.” Prof Hugo Touchette from Stellenbosch University will be shedding some light on this interesting topic in his presentation on Predicting and simulating rare events.

Prof Jeandrew Brink, Associate Professor in the Department of Mathematics and Applied Mathematics at the UFS, is presenting a plenary session on the topic Determining the geometry of strong field space-times in spite of tacitly assuming the answer during every measurement. In South Africa, state-of-the art pulsar timing data from the MeerKAT telescope will make a considerable contribution to conducting GR orbital tests. Prof Brink comments on how pulsar timing tests differ from tests using gravitational wave detectors, as well as what we can learn from the framework already employed to perform pulsar timing measurements.

News Archive

Science and goodwill meet drought-stricken communities
2016-03-02

Description: Disinfecting tankered water  Tags: Disinfecting water

“Everyone should contribute to the delivery of clean water to every individual,” says UFS researcher.

The drought in South Africa has impacted the country in many ways. Apart from its economic and environmental implications, the drought also has social implications, leaving some communities without water.

Since 21 January 2016, the Department of Water and Sanitation (DWS) is working together with the Department of Microbial, Biochemical, and Food Biotechnology at the University of the Free State. Dr Mariana Erasmus, post-doctoral fellow in the department, was appointed to lead a project for disinfecting tankered water supplied by the DWS to communities without water in the Qwaqwa area - which falls under the Maluti-a-Phufung Local Municipality.

She is working on the project with Robbie Erasmus from BioSense Solutions and Martin Bambo from DWS. A total of 53 trucks, 91 tanks, and 420 500 litres of water was disinfected so far, using sodium hypochlorite. “This is standard practice around the world,” Dr Erasmus said.

The work done by the UFS and DWS, who is monitoring the water quality as well as the process of water delivery, is very important. Disinfecting the trucks used to deliver water to drought-stricken communities decreases the formation of biofilm inside the tanks. “The biofilm could contain harmful bacteria such as E-coli. It is important to note that this is mostly the result of secondary pollution, since the water quality from the source where it was taken from, proved to be good. Drinking water with this harmful bacteria that has not been properly managed, can lead to health issues in humans when consumed,” Dr Erasmus said.

The Department of Microbial, Biochemical, and Food Biotechnology, interacting with the DWS on several water-related issues, volunteered to get involved in the project. They strongly believe that everyone should contribute to the delivery of clean water to every individual.

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