20 February 1910
|Died||28 August 2005 (aged 95)|
|Notable ideas||Happy ending problem|
Esther Klein was born to Ignaz Klein in a Jewish family in Budapest, Kingdom of Hungary in 1910. As a young physics student in Budapest, Klein was a member of a group of Hungarians including Paul Erdős, George Szekeres and Pál Turán that convened over interesting mathematical problems.
Following the outbreak of World War II, Esther and George Szekeres emigrated to Australia after spending several years in Hongkew, a community of refugees located in Shanghai, China. In Australia, they originally shared an apartment in Adelaide with Márta Svéd, an old school friend of Szekeres, before moving to Sydney in 1964.
In Sydney, Esther lectured at Macquarie University and was actively involved in mathematics enrichment for high-school students. In 1984, she jointly founded a weekly mathematics enrichment meeting that has since expanded into a programme of about 30 groups that continue to meet weekly and inspire high school students throughout Australia and New Zealand.
- Cowling, Michael (7 November 2005). "A world of teaching and numbers - times two". The Sydney Morning Herald. Retrieved 11 August 2012.
- O'Connor, John J.; Robertson, Edmund F., "Esther Szekeres", MacTutor History of Mathematics archive, University of St Andrews.
- "Shanghai, a city for Jews in China". The Menorah of Fang Bang Lu. Archived from the original on 13 August 2010. Retrieved 30 August 2005.
- Taylor, Peter (December 2005). "Szekeres Obituary". Australian Mathematics Trust. Archived from the original on 4 March 2016. Retrieved 11 August 2012.
- "A7 Awards". Australian Mathematics Trust. Retrieved 7 April 2018.