These talks will be self-contained presentations of mathematical concepts and theorems. They are intended to be accessible to all mathematics
students.  Coffee, tea and drinks will be provided.

It was during my adolescence in Europe that I first came across informative literature about Australia in a popular magazine article. There, a most fascinating account was given about ``native customs'', and I learned that Australians ``married in groups''. No further details were given, however, and the reader's imagination had to fill in the gaps. Only later did I realise the mathematical significance of those ``group marriages'', which demonstrate that algebra may have been practised in Australia over the last 40000 years (or so?).