Question: Which mathematician, who was among many who proposed the SYZ conjecture, won the Fields medal in 1982?
Context: Shing-Tung Yau ( ; ; born April 4, 1949) is a Hong Kong and naturalised American mathematician.  He was awarded the Fields Medal in 1982.  He is currently the William Caspar Graustein Professor of Mathematics at Harvard. Cristian Dumitru Popescu is a Romanian-American mathematician at the University of California, San Diego.  His research interests are in Algebraic Number Theory, and in particular, in special values of L-functions.  He formulated and proved function-field versions of the Gras conjectures and Rubin's integral refinement of the abelian Stark conjectures.  He has also made important contributions to the Stark conjectures over number fields, formulating an alternative to Rubin's refinement, known as Popescu's conjecture.  Although slightly weaker than Rubin's conjecture, it has the advantage that it can presently be shown to remain true under raising the base field or lowering the top field of the extension.  Recently, Popescu and Cornelius Greither have formulated equivariant versions of Iwasawa's main conjecture over function fields and global fields, proving most the version for function fields.  These conjectures have important implications for the Brumer–Stark conjecture and Gross' conjecture on special values of L-functions. The Fields Medal Symposium is an annual event that honours one of the Fields Medal recipients from the most recent International Congress of Mathematicians.  The symposium is jointly endorsed by the International Mathematical Union and the Fields Institute for Mathematical Sciences.  The idea was conceived in preparation for the International Congress of Mathematicians 2010 (ICM2010) in Hyberdad, India.  Professor Edward Bierstone of the University of Toronto was the director of the institute during the inaugural symposium in October 2012.  All symposiums take place at the Fields Institute in Toronto, Canada.  The symposia include mathematical activity that explore work related to the honoured Fields Medallist.  They will include public lectures meant to spark interest in mathematics including public lectures and events for students. Eric Zaslow is an American mathematical physicist at Northwestern University.  He attended Harvard for his Ph.D in Physics.  His research focuses on mathematical questions arising from duality symmetries in theoretical physics such as mirror symmetry.  With Andrew Strominger and Shing-Tung Yau, he formulated the SYZ conjecture. In mathematics, the Demazure conjecture is a conjecture about representations of algebraic groups over the integers made by .  The conjecture implies that many of the results of his paper can be extended from complex algebraic groups to algebraic groups over fields of other characteristics or over the integers.  showed that Demazure's conjecture (for classical groups) follows from their work on standard monomial theory, and Peter Littelmann extended this to all reductive algebraic groups. In mathematics, the Calabi conjecture was a conjecture about the existence of certain "nice" Riemannian metrics on certain complex manifolds, made by and proved by .  Yau received the Fields Medal in 1982 in part for this proof. The Fields Institute for Research in Mathematical Sciences, commonly known simply as Fields Institute, is an international centre for scientific research in mathematical sciences at the University of Toronto, in Canada.  The institute is named for University of Toronto mathematician John Charles Fields, founder of the Fields Medal.  It was established in 1992, and was briefly based at the University of Waterloo before relocating to Toronto in 1995. Vladimir Alexandrovich Voevodsky ( ; Russian: Влади́мир Алекса́ндрович Воево́дский , 4 June 1966 - 30 September 2017) was a Russian mathematician.  His work in developing a homotopy theory for algebraic varieties and formulating motivic cohomology led to the award of a Fields Medal in 2002.  He is also known for the proof of the Milnor conjecture and motivic Bloch-Kato conjectures and for the univalent foundations of mathematics and homotopy type theory. The SYZ conjecture is an attempt to understand the mirror symmetry conjecture, an issue in theoretical physics and mathematics.  The original conjecture was proposed in a paper by Strominger, Yau, and Zaslow, entitled "Mirror Symmetry is "T"-duality". Michael Hartley Freedman (born 21 April 1951) is an American mathematician, at Microsoft Station Q, a research group at the University of California, Santa Barbara.  In 1986, he was awarded a Fields Medal for his work on the Poincaré conjecture.  Freedman and Robion Kirby showed that an exotic R manifold exists.
Answer: Shing-Tung Yau