Alan J. Hoffman
Alan Jerome Hoffman (May 30, 1924 – January 18, 2021) was an American mathematician and IBM Fellow emeritus, T. J. Watson Research Center, IBM, in Yorktown Heights, New York. He was the founding editor of the journal Linear Algebra and its Applications, and held several patents. He contributed to combinatorial optimization and the eigenvalue theory of graphs. Hoffman and Robert Singleton constructed the Hoffman–Singleton graph, which is the unique Moore graph of degree 7 and diameter 2.
Alan Hoffman | |
|---|---|
| Born | May 30, 1924 New York City, New York, U.S. |
| Died | January 18, 2021 (aged 96) |
| Nationality | American |
| Alma mater | Columbia University |
| Awards | John von Neumann Theory Prize (1992) |
| Scientific career | |
| Fields | Mathematics |
| Institutions | Thomas J. Watson Research Center City University of New York |
| Thesis | On the Foundations of Inversion Geometry (1950) |
| Doctoral advisor | Edgar Lorch |
| Doctoral students | Lennox Superville |
Hoffman died on January 18, 2021, at the age of 96.
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