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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

Expert in Africa Studies debunks African middle class myth
2016-05-10

Description: Prof Henning Melber Tags: Prof Henning Melber

From left: Prof Heidi Hudson, Director of the Centre for Africa Studies (CAS), Joe Besigye from the Institute of Reconciliation and Social Justice, and Prof Henning Melber, Extraordinary Professor at the CAS and guest lecturer for the day.
Photo: Valentino Ndaba

Until recently, think tanks from North America, the African Development Bank, United Nations Development Plan, and global economists have defined the African middle class based purely on monetary arithmetic. One of the claims made in the past is that anyone with a consumption power of $2 per day constitutes the middle class. Following this, if poverty is defined as monetary income below $1.5 a day, it means that it takes just half a dollar to reach the threshold considered as African middle class.

Prof Henning Melber highlighted the disparities in the notion of a growing African middle class in a guest lecture titled A critical anatomy of the African middle class(es), hosted by our Centre for Africa Studies (CAS) at the University of the Free State on 4 May 2016. He is an Extraordinary Professor at the Centre, as well as Senior Adviser and Director Emeritus of the Dag Hammarskjöld Foundation in Sweden.

Prof Melber argued that it is misleading to consider only income when identifying the middle class. In his opinion, such views were advanced by promoters of the global neo-liberal project. “My suspicion is that those who promote the middle class  discourse in that way, based on such a low threshold, were desperate to look for the success story that testifies to Africa rising.”

Another pitfall of such a middle-class analysis is its ahistorical contextualisation. This economically-reduced notion of the class is a sheer distortion. Prof Melber advised analysts to take cognisance of factors, such as consumption patterns, lifestyle, and political affiliation, amongst others.

In his second lecture for the day, Prof Melber dealt withthe topic of: Namibia since independence: the limits to Liberation, painting the historical backdrop against which the country’s current government is consolidating its political hegemony. He highlighted examples of the limited transformation that has been achieved since Namibia’s independence in 1990.

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