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07 September 2018 Photo Stephen Collett
Mathematician makes popular contribution to science Prof Atangana
Prof Atangana is the first African under 40 years of age to be selected as African Academic of Science affiliated in Mathematics. He recently delivered his inaugural lecture and is pictured with Eelco Lukas, Director of the Institute for GroundwaterStudies at the UFS (middle) and Prof Hendri Kroukamp, Acting Vice-Rector: Academic
Prof Abdon Atangana, researcher in the Institute for Groundwater Studies at the University of the Free State (UFS), recently delivered his inaugural lecture on the topic: Understanding God’s Nature with Non-Local Operators.

His research interests are methods and applications of partial and ordinary differential equations, fractional differential equations, perturbation methods, asymptotic methods, iterative methods, and groundwater modelling. Prof Atangana is the founder of the fractional calculus with non-local and non-singular kernels popular in applied mathematics today. He has introduced more than 12 mathematical operators, most of which bear his name (such as the Atangana-Baleanu fractional integral).

He stated: “We will not stop until we change the classical view of doing mathematics. Mathematics is not a subject but a tool given to mankind by God to understand nature. One single mathematical operator cannot portray God’s nature accurately. Therefore the Atangana Baleanu was suggested.”

New weapons

Most physical problems can be expressed in terms of mathematical formulations called differential equations. According to him the differential equation’s aim is to analyse, understand, and predict the future of a physical problem. Prof Atangana introduced the Atangana-Baleanu fractional integral. This brought new weapons into applied mathematics to model complex real-world problems more accurately.

Prof Atangana explained: “The Atangana-Baleanu fractional derivative is able to describe real-world problems with different scales, or problems that change their properties during time and space for instance, the spread of cancer, the flow of water within heterogeneous aquifers, movement of pollution within fractured aquifers, and many others. This crossover behaviour is observed in many empirical systems.”

Sudden change

The Atangana-Baleanu fractional derivative is also able to describe physical or biological phenomena, such as a heart attack, the physiological progression from life to death, structural failure in an aeroplane, and many other physical occurrences with sudden change with no steady state.

The new differential and integral operators are nowadays in fashion and are being applied with great success in many fields to model complex natural phenomena. It is believed that the future of modelling complex real-world problems relies on these non-local operators.

News Archive

Lecture on interpretations and translations of San place names
2011-09-23

Prof. Peter Raper, recently appointed as Honorary Professor: Linguistics, in the Department of Language Management and Language Practice at the University of the Free State, will deliver his inaugural lecture on Tuesday evening, 27 September 2011. His topic for the evening is “Interpretations and translations of Bushman (San) place names”. With this inaugural lecture, he also introduces an interesting one-day international colloquium on the theme: “Name-change planning – striving towards authenticity”.A panel discussion about street-name changes in Bloemfontein forms part of this colloquium and promises to elicit a stimulating debate.

Prof. Raper is probably better known for three popular place-name dictionaries, Streekname in Suid-Afrika en Suidwes, published in 1972; the Dictionary of Southern African Place Names, published in 1987, updated in 1989 and published in 2004 with some additions as New dictionary of South African place names; and Hottentot (Khoekhoen) place names, a dictionary compiled in collaboration with the famous Prof. G S  Nienaber (a former Kovsie). In fact, Prof. Raper’s work is a continuation of their world-renowned series, Toponymica Hottentotica, which was published between 1977 and 1981. It is generally regarded as the most authoritative work on Hottentot place names. His current interest in Bushman place names builds on this pioneering work and is actually also a re-evaluation of the underestimated role of the Bushman with regard to place naming in South Africa up to now. His work offers a new perspective on what could be regarded as the “first” or earliest names of places in South Africa and brings a sobering perspective to the current debates regarding place-name changes where various claims are made about “who has given the name first”.

However, Prof. Raper is also known for his role in the standardisation of place names, both nationally and internationally. In South Africa, he has served on the South African National Place Names Committee (1972-1999), the South African Geographical Names Council (1999-2002) and, since 1981, on the Names Society of Southern Africa. Currently, he is an honorary member of this association. Since 1984, he has also been serving on the United Nations Group Experts on Geographical Names and has even been the Chairperson of this Leading international standardisation body (1991-2002).

Apart from this, Prof. Raper regularly publishes his research on geographical names in a variety of academic journals and still participates in the most important national and international conferences on names on a regular basis. Prof. Raper is honoured as South Africa’s foremost names expert.

His inaugural lecture will introduce a colloquium on names planning, presented by his host department. Experts from Lesotho, Zimbabwe and the USA are participating in the proceedings, amongst others, the current Chairperson of the Names Society of Southern Africa, Prof. Adrian Koopman (University of KwaZulu-Natal).

RSVP: Joy Maasdorp on +27(0)51 401 2405 or maasdorpjh@ufs.ac.za before or on Thursday, 22 September 2011.

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