Daniel Isaac Aryeh Cohen (born 1946) is an American

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematica ...

and

computer scientist A computer scientist is a scientist who specializes in the academic study of computer science. Computer scientists typically work on the theoretical side of computation. Although computer scientists can also focus their work and research on ...

who is now a

professor emeritus ''Emeritus/Emerita'' () is an honorary title granted to someone who retirement, retires from a position of distinction, most commonly an academic faculty position, but is allowed to continue using the previous title, as in "professor emeritus". ...

Hunter College Hunter College is a public university in New York City, United States. It is one of the constituent colleges of the City University of New York and offers studies in more than one hundred undergraduate and postgraduate fields across five schools ...

.. Cohen earned a bachelor's degree in mathematics from

Princeton University Princeton University is a private university, private Ivy League research university in Princeton, New Jersey, United States. Founded in 1746 in Elizabeth, New Jersey, Elizabeth as the College of New Jersey, Princeton is the List of Colonial ...

in 1967 and already as an undergraduate published a research paper about

Sperner's lemma In mathematics, Sperner's lemma is a combinatorial result on colorings of triangulations, analogous to the Brouwer fixed point theorem, which is equivalent to it. It states that every Sperner coloring (described below) of a triangulation of an ...

, which he learned about from

Hans Rademacher Hans Adolph Rademacher (; 3 April 1892 – 7 February 1969) was a German-born American mathematician, known for work in mathematical analysis and number theory. Biography Rademacher received his Ph.D. in 1916 from Georg-August-Universität Göt ...

. He completed his doctorate in 1975 from

Harvard University Harvard University is a Private university, private Ivy League research university in Cambridge, Massachusetts, United States. Founded in 1636 and named for its first benefactor, the History of the Puritans in North America, Puritan clergyma ...

under the joint supervision of

Andrew M. Gleason Andrew Mattei Gleason (19212008) was an American mathematician who made fundamental contributions to widely varied areas of mathematics, including the solution of Hilbert's fifth problem, and was a leader in reform and innovation in teaching a ...

and

Gian-Carlo Rota Gian-Carlo Rota (April 27, 1932 – April 18, 1999) was an Italian-American mathematician and philosopher. He spent most of his career at the Massachusetts Institute of Technology, where he worked in combinatorics, functional analysis, proba ...

. He was a mathematician at Hunter College in 1981 when the computer science department was founded, and became one of five initial computer science professors there. Cohen is the author of the textbooks ''Basic Techniques of Combinatorial Theory'' (John Wiley & Sons, 1979) and ''Introduction to Computer Theory'' (John Wiley & Sons, 1986; 2nd ed., 1996). An undergraduate award for a graduating senior at Hunter College, the Daniel I.A. Cohen Prize for Academic Excellence in Theoretical Computer Science, was named after Cohen..

References

1946 births Living people 20th-century American mathematicians 21st-century American mathematicians American computer scientists Princeton University alumni Harvard Graduate School of Arts and Sciences alumni Hunter College faculty Combinatorialists {{US-mathematician-stub