Australians on a roll at world mathematics congress
Professor Geordie Williamson speaking in Rio at the International Congress of Mathematicians. Credit: ICM
Professor Geordie Williamson from the University of Sydney has become the first Australia-based mathematician to deliver a plenary address to an International Congress of Mathematicians (ICM).
In what is a rare honour, the one-hour lecture, presented overnight at the world congress in Rio de Janeiro, Brazil, caps off a stellar two weeks for Australian mathematics on the world stage.
US-based Australian mathematician was last week awarded a Fields Medal, the highest honour in world mathematics for a scholar under the age of 40. This followed the election of University of Sydney鈥檚 as Vice-President of the International Union of Mathematics. Professor Joshi is the first Australian to hold this position.
Professor Williamson will shortly return to Sydney where he of the University of Sydney鈥檚 Mathematical Research Institute, a world-class centre for the best mathematicians on the planet to visit and pursue deep thinking on profound questions in mathematics.
In Rio, Professor Williamson鈥檚 plenary lecture was an exploration of geometric techniques in what are seemingly algebraic problems.
The his techniques using symmetric groups in representation theory through a concept known as semi-simplicity at the ICM.
鈥淪emi-simplicity is a little like the air we breathe in representation theory,鈥� Professor Williamson explained. 鈥淚n initial situations, it鈥檚 everywhere, but when you go further and further out, you lose semi-simplicity.鈥�
Representation theory is the study of symmetric solutions to linear equations, and geometry in this context means the study of the shapes formed by the solutions of non-linear equations.
The ICM described Professor Williamson鈥檚 鈥渃harismatic approach鈥� to his speech as a 鈥渃rowd-pleaser鈥� and congress delegates rushed to congratulate him after, , the 1966 Fields medal winner. Professor Atiyah said Professor Williamson gave a 鈥渂rilliant talk鈥� and considered the 36-year-old mathematician to be like his 鈥済reat grandson in mathematics鈥�.
This year Professor Williamson was of the Royal Society in London and also the youngest Fellow of the Australian Academy of Science.
Professor Anthony Henderson from the University鈥檚 School of Mathematics and Statistics said: 鈥淚t is great that Australian mathematicians have been particularly prominent at this year鈥檚 ICM. On Friday the Charge d鈥橝ffaires from the Australian embassy in Brazil, Peter Doyle, congratulated Fields medallist Akshay Venkatesh, plenary lecturer Geordie Williamson and newly elected IMU Vice-President Nalini Joshi.鈥�
Professor Henderson will be the Sydney Mathematical Research Institute鈥檚 executive director.
