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Fields medal: UK refugee wins 'biggest maths prize'

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Caucher Birkar was born in Iran but now works at the University of Cambridge
One of the most prestigious prizes in mathematics has been handed out at a ceremony in Brazil. Caucher Birkar, Alessio Figalli and Peter Scholze, and Akshay Venkatesh are all honoured for major contributions to their respective areas in mathematics.Prof Birkar, a Kurd, came to the UK as a refugee from Iran.The Fields Medals are awarded every four years to the most promising mathematicians under the age of 40.Each winner receives a 15,000 Canadian-dollar cash prize.
Kurdish mathematician Caucher Birkar, who turned 40 this month, was born in Iran but is now based at the University of Cambridge.He told Quanta magazine that, while studying for his undergraduate degree at the University of Tehran, he travelled to the UK and sought political asylum there.He said that while growing up, his maths club in Tehran had pictures of Fields Medal winners lining the walls. "I looked at them and said to myself, 'will I ever meet one of these people
Prof Birkar is known for his work on birational geometry and has previously won the prestigious Leverhulme Prize. Alessio Figalli, 34, was born in Rome but works at ETH Zurich, a science and technology university in Switzerland. He is an expert on calculus of variations and partial differential equations."This prize gives me so much joy," Mr Figalli told the Italian news agency Ansa. "It is such a big thing that I'm struggling to believe that I have received it."It is a great stimulus for the future," he added. "It will motivate me to work in my research fields to try to produce studies of a very high level".The youngest of the four, Peter Scholze, who is 30, works at the University of Bonn. His research focuses on the intersection between number theory and geometry. He was widely tipped to win the prize ahead of the announcement.
Prof Hairer, who was awarded the Fields Medal in 2014, says things can change "instantly" for winners
The Australian Dr Venkatesh, 36, studies number theory and representation theory.Prof Martin Hairer, from Imperial College London, who was awarded the Fields Medal in 2014, said the award could be transformative for the winners. He told BBC News: "As you can imagine, their status will instantly change from 'highly respected researcher in the area of XXX' to 'celebrity in the mathematics community'. In the short term, this will give them a level of exposure that mathematicians are typically not used to and they'll have to figure out how to deal with that."At a less ephemeral level, it makes them figureheads within mathematics for their area of research, so they will spend much more time communicating to a broader audience than what they are probably used to."There have been 56 winners, though one of them - the Russian Grigori Perelman - declined the award in 2006. Dr Perelman was famously reclusive and shunned attention in favour of working on his favoured fields.
Cedric Villani made a move into politics after winning the medal
There has been only one woman winner - the Iranian Maryam Mirzakhani. A professor at Stanford University in the US, she died in 2017.Cedric Villani made a move into politics after winning the prize in 2010. Last year, he became a National Assembly member in his native France for Emmanuel Macron's En Marche party.Martin Hairer added: "At the end of the day, while some of the laureates have capitalised on their medal to initiate a change of career (Cedric Villani comes to mind), most of them continue to produce outstanding research in their chosen area and, to a large extent, lead the same kind of life as any other highly successful mathematician."At least two, and preferably four people, are always honoured in the award ceremony. The prize was inaugurated in 1932 at the request of Canadian mathematician John Charles Fields, who ran the 1924 Mathematics Congress in Toronto.The medals themselves are still produced by the Canadian mint.The awards were announced at the International Congress of Mathematicians in Rio de Janeiro.Follow Paul on Twitter.
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