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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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NASA Deep Space Navigation engineer presents at Naval Hill Planetarium
2017-03-30

Description: NASA Deep Space Navigation engineer  Tags: NASA Deep Space Navigation engineer

From the left: Chris du Plessis; US Consulate, Johannesburg,
Prof Petrus Meintjes; Dept of Physics UFS, Christopher Jacobs;
NASA, and Anthony Deaton; US Consulate Johannesburg.
Photo: Rulanzen Martin

The University of the Free State (UFS) hosted NASA Deep Space engineer Christopher Jacobs on 27 March 2017 at the Bloemfontein Campus. The engagement was hosted by Prof Matie Hoffman of the Department of Physics and the Department of Institutional Advancement, in collaboration with the US Consulate General in Johannesburg.

Jacobs is stationed at NASA’s Jet Propulsion Laboratory (JPL) at the California Institute of Technology and has served as the Reference Frame Calibration task manager for 25 years. In this role he has been responsible for delivering the reference frames used to navigate NASA missions such as the Mars Science Laboratory to planetary targets.

His visit to the UFS included a presentation to the Department of Astrophysics at the Faculty of Natural and Agricultural Sciences and at the Naval Hill Planetarium in Bloemfontein where he spoke on Stellar GPS: Navigating the Solar System. He also spoke about the latest research and developments at NASA in Astrometry. The visit will establish and develop shared interests and possible collaboration with UFS and other institutions of interest in the country. “South Africa, because of its well-placed geographic location in the southern hemisphere, holds a lot of answers to astronomy,” Jacobs said.

He has an active interest in professional and public education, and outreach, having given public lectures around the world. “Astronomy brings people together and is a point of common interest that is key in solving environmental and geographical challenges such as climate change, therefore global cooperation is important,” he said.

Prof Hoffman welcomed the initiative by the US Consulate and the possible outcomes of joint efforts to position the UFS as a key partner in South Africa on NASA’s astronomy projects. In the coming weeks Jacobs will speak at high schools in Gauteng including the Mae Jemison US Science Reading Room in Mamelodi, Pretoria, a centre that is focused on promoting science education.

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