Henry Cohn is an American mathematician. He is a principal researcher at

Microsoft Research Microsoft Research (MSR) is the research subsidiary of Microsoft. It was created in 1991 by Richard Rashid, Bill Gates and Nathan Myhrvold with the intent to advance state-of-the-art computing and solve difficult world problems through technologi ...

and an adjunct professor at

MIT The Massachusetts Institute of Technology (MIT) is a private land-grant research university in Cambridge, Massachusetts. Established in 1861, MIT has played a key role in the development of modern technology and science, and is one of the m ...

. In collaboration with Abhinav Kumar, Stephen D. Miller, Danylo Radchenko, and

Maryna Viazovska Maryna Sergiivna Viazovska ( uk, Марина Сергіївна Вязовська, ; born 2 December 1984) is a Ukrainian mathematician known for her work in sphere packing. She is full professor and Chair of Number Theory at the Institute of M ...

, he solved the

sphere packing In geometry, a sphere packing is an arrangement of non-overlapping spheres within a containing space. The spheres considered are usually all of identical size, and the space is usually three-dimensional Euclidean space. However, sphere packing p ...

problem in 24 dimensions. Cohn graduated from

Harvard University Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher le ...

in 2000 with a doctorate in mathematics. Cohn was an Erdős Lecturer at

Hebrew University of Jerusalem The Hebrew University of Jerusalem (HUJI; he, הַאוּנִיבֶרְסִיטָה הַעִבְרִית בִּירוּשָׁלַיִם) is a public research university based in Jerusalem, Israel. Co-founded by Albert Einstein and Dr. Chaim Weiz ...

in 2008. In 2016, he became a

Fellow A fellow is a concept whose exact meaning depends on context. In learned or professional societies, it refers to a privileged member who is specially elected in recognition of their work and achievements. Within the context of higher education ...

of the

American Mathematical Society The American Mathematical Society (AMS) is an association of professional mathematicians dedicated to the interests of mathematical research and scholarship, and serves the national and international community through its publications, meetings, ...

"for contributions to discrete mathematics, including applications to computer science and physics." In 2018, he was awarded the

Levi L. Conant Prize The Levi L. Conant Prize is a mathematics prize of the American Mathematical Society, which has been awarded since 2000 for outstanding expository papers published in the ''Bulletin of the American Mathematical Society'' or the ''Notices of the Amer ...

for his article “A Conceptual Breakthrough in Sphere Packing,” published in 2017 in the ''

Notices of the AMS ''Notices of the American Mathematical Society'' is the membership journal of the American Mathematical Society (AMS), published monthly except for the combined June/July issue. The first volume appeared in 1953. Each issue of the magazine since ...

''.

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* Year of birth missing (living people) Living people 20th-century American mathematicians 21st-century American mathematicians Fellows of the American Mathematical Society Harvard Graduate School of Arts and Sciences alumni Massachusetts Institute of Technology alumni Microsoft Research people {{US-mathematician-stub