Robert MacPherson (mathematician)

Robert MacPherson
MacPherson at Oberwolfach in 2008
Born	(1944-05-25) May 25, 1944 (age 80) Lakewood, Ohio
Nationality	American
Alma mater	Swarthmore College Harvard University
Known for	Intersection homology
Awards	NAS Award in Mathematics (1992) Leroy P. Steele Prize (2002) Heinz Hopf Prize (2009)
Scientific career
Fields	Mathematics
Institutions	Massachusetts Institute of Technology Brown University Princeton University
Doctoral advisor	Raoul Bott
Doctoral students	Mark Goresky David Nadler Julianna Tymoczko Kari Vilonen Zhiwei Yun

Robert Duncan MacPherson (born May 25, 1944) is an American mathematician at the Institute for Advanced Study.

Robert Duncan MacPherson was born in Lakewood, Ohio on May 25, 1944.^[1]

He received his bachelor's degree from Swarthmore College in 1966.^[1] MacPherson received his PhD from Harvard in 1970 with a thesis, written under the direction of Raoul Bott, entitled Singularities of Maps and Characteristic Classes.^[2]

MacPherson was at Brown University as a J. D. Tamarkin Instructor from 1970 to 1972, an assistant professor from 1972 to 1974, an associate professor from 1974 to 1977, and then a professor from 1977 to 1987.^[1] He was a professor at the Massachusetts Institute of Technology from 1987 to 1994.^[1] He became a professor of mathematics at the Institute for Advanced Study in 1994, later becoming named a Hermann Weyl Professor.^[1] He retired and became a professor emeritus 2018.^[1]

His notable doctoral students include Mark Goresky, David Nadler, Julianna Tymoczko, Kari Vilonen, and Zhiwei Yun.^[2]

MacPherson and Goresky introduced intersection homology.^[3] He also worked on arithmetic groups, in particular on Siegel modular threefolds with Mark McConnell and on compactifications of symmetric spaces with Lizhen Ji.^[4]

In 1983, MacPherson gave a plenary address at the International Congress of Mathematicians.

In 1992, MacPherson was awarded the NAS Award in Mathematics from the National Academy of Sciences.^[5] In 2002, he and Goresky were awarded the Leroy P. Steele Prize for Seminal Contribution to Research by the American Mathematical Society.^[6][7] In 2009 he received the Heinz Hopf Prize from ETH Zurich.^[1]

In 2012, he became a fellow of the American Mathematical Society.^[8] He is also a fellow of the National Academy of Sciences and the American Academy of Arts and Sciences.^[1]

He received honorary doctorates from the University of Lille in 1993 and Brown University in 1994.^[1]

MacPherson's PhD advisee, Mark Goresky, later became his life partner.^[3] After the collapse of the Soviet Union, they were instrumental in channeling aid to Russian mathematicians, especially many who had to hide their sexuality.^[3]

• Goresky, Mark; MacPherson, Robert, La dualité de Poincaré pour les espaces singuliers, C. R. Acad. Sci. Paris Sér. A-B 284 (1977), no. 24, A1549–A1551. MR0440533
• Goresky, Mark; MacPherson, Robert, Intersection homology theory, Topology 19 (1980), no. 2, 135–162. doi:10.1016/0040-9383(80)90003-8 MR0572580
• Goresky, Mark; MacPherson, Robert, Intersection homology. II, Inventiones Mathematicae 72 (1983), no. 1, 77–129. doi:10.1007/BF01389130 MR0696691

Wikimedia Commons has media related to Robert MacPherson (mathematician).

• IAS page, including links to publications and CV
• The work of Robert MacPherson

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