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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 hosts first SA Digital Sky Academy at the Naval Hill Planetarium
2015-10-02


From the left are: Prof Neil Heideman
(Dean: Faculty of Natural and Agricultural Sciences, UFS),
Jack White (Director: Sky-Skan Oceania),
Dr Michelle Cluver (Department of Astronomy, University of the Western Cape),
Martin Ratcliffe (Director: Professional Development, Sky-Skan).
Photo: Mart-Mari Duvenhage

South Africa hosts some of the world’s largest telescopes, and won the bid to co-host the SKA recently. So it’s not surprising that there is unprecedented interest in Astronomy in our country. Astronomy is seen as a gateway subject that attracts people to the sciences, while planetariums help to make Astronomy accessible to millions of people.  Digital planetariums are especially powerful teaching tools because they are versatile, offer an immersive experience, and explain and illustrate three-dimensional concepts effectively.  On the other hand, scientists, are eager to exploit a digital planetarium’s potential to represent and explore data visually, whether the data relate to medicine, astronomy, chemistry, the environment, or other fields of research.

The four-day ‘Digital Sky Academy’ (DSA) presented at the Naval Hill Planetarium in Bloemfontein from 18 - 22 September 2015 was an opportunity to offer training and first-hand experience of digital planetarium technology to representatives from other centres in South Africa. The Department of Physics at the University of the Free State (UFS) was the host of this event.

The Department of Science and Technology has designated the Naval Hill Planetarium as the South African hub for the training of digital planetarium presenters and operators. In addition to attracting interest from scientists and future planetarium operators and presenters, the DSA workshop provided an invaluable opportunity for our presenters to hone their skills.

A number of experienced and distinguished people attended the workshop. Among them was Dr Mark SubbaRao from Chicago in the United States, who shared information on data visualisation techniques used in the Adler Planetarium. Jack White, Director of Sky-Skan, one of the few companies that provide digital technology for planetariums throughout the world, coordinated the event in partnership with Prof Matie Hoffman from the Department of Physics at the UFS.

Jack travelled from Melbourne in Australia to oversee the workshop. Two Sky-Skan colleagues from the United States, Martin Weiss and Martin Ratcliffe, were on hand to share their expertise on digital planetarium hardware and software. The workshop programme included Skype conference calls with other US-based planetarium experts. Amongst the delegates to the DSA representatives from the SKA, the Iziko Museum, and five South Africa universities. They were here to gain experience, explore the capacity of the digital facility, and share ideas on future collaboration.

During the workshop, a public lecture was held on 19 September. Dr Michelle Cluver from the University of the Western Cape gave a presentation entitled, ‘More than the eye can see: the significance of infrared light in Astronomy.’

 

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