Stephen Theodore Chesmer Siklos (27 March 1950 – 17 August 2019) was a British mathematician, astrophysicist and university administrator. For his doctorate, he undertook research into general relativity under Stephen Hawking. After completing two postdoctoral positions, he spent the remainder of his career at the University of Cambridge. He was at various times a lecturer in the Faculty of Mathematics, Director of Studies for Mathematics at Newnham College and Jesus College and Senior Tutor at Jesus College. He is best known for his work in setting up and administering the Sixth Term Examination Papers, used for undergraduate mathematics admissions at several British universities.
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