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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.

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Wayde runs 100 m personal best in Slovenia
2017-06-21

Description: Wayde runs 100 m personal best in Slovenia Tags: Wayde runs 100 m personal best in Slovenia

Wayde van Niekerk is in great form leading up to the
World Championships in London in August.
Photo: Charl Devenish

“This also bodes well for my two main distances." This is what Wayde van Niekerk said according to www.iaaf.org, after running a personal best time of 9.94 in the 100 m in Velenje, Slovenia, on 20 June 2017. The Kovsie athlete improved his previous best by 0.04 seconds at the 22nd International Athletics Meeting.

Van Niekerk was referring to the other distances in which he excels – the 200 m and 400 m. The 400 m world record-holder said he was pleased with his latest run: "It's my best time and I'm glad the competition ended the way I wanted it to.”

National 200 m record and world’s fastest in 2017
His feat in the 100 m was his latest success, as he recently became the national record-holder in the 200 m again, and also the fastest man on the planet in this distance in 2017. After he ran a 19.90, the world’s fastest this year, when he won the South African title in Potchefstroom in April, the American Christian Coleman (19.85) improved on that.

However, Van Niekerk ran a 19.84 in the 200 m at the Racers Grand Prix in Kingston, Jamaica, on 11 June 2017. This was 0.06 seconds quicker than his personal best, and 0.03 seconds better than Anaso Jobodwana’s national record of 19.87.

Same pace a second time in a week
It was also the second time in a week that he ran a 19.84 in the 200 m. This after he did it on a temporary built track at the Boost Boston Games on 4 June 2017. The race was run on a straight street course and was therefore not officially recognised as a record.

He seems to be in good shape leading up to his attempt to run a double, his favourite 400 m and the 200 m, at the World Championships in London, England, in August.

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