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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

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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