Each year, The Steele Prize is awarded in the following categories:

1. *The Steele Prize for Lifetime Achievement* is awarded for the cumulative influence of the total mathematical work of the recipient, high level of research over a period of time,
particular influence on the development of a field, and influence on mathematics through Ph.D. students. The amount of this prize is \$10,000.

**Nominations can be submitted between February 1 and March 31.** Nominations for the Steele Prizes for Lifetime Achievement will remain active and receive consideration
for three consecutive years.

**Next Prize:** January 2019

2. *The Steele Prize for Mathematical Exposition* is awarded for a book or substantial survey or expository research paper.The amount of this prize is \$5,000.

**Nominations can be submitted between February 1 and March 31.** Nominations for the Steele Prizes for Mathematical Exposition will remain active and receive
consideration for three consecutive years.

**Next Prize:** January 2019

3. *The Steele Prize for Seminal Contribution to Research *is awarded for a paper, whether recent or not, that has proved to be of fundamental or lasting
importance in its field, or a model of important research. The amount of this prize is \$5,000.

*Special Note*: The Steele Prize for Seminal Contribution to Research is awarded according to the following six-year rotation of subject areas:

**Open (2019)**- Analysis/Probability (2020)
- Algebra/Number Theory (2021)
- Applied Mathematics (2022)
- Geometry/Topology (2023)
- Discrete Mathematics/Logic (2024)

**Nominations can be submitted between February 1 and March 31.**

**Next Prize:** January 2019

- Lifetime Achievement: January 2018
- The 2018 Lifetime Achievement Prize was awarded to Jean Bourgain for the breadth of his contributions made in the advancement of mathematics.
- Mathematical Exposition: January 2018
- The 2018 Mathematical Exposition Prize was awarded to Martin Aigner and Günter M. Ziegler for
*Proofs from THE BOOK*. - Seminal Contribution to Research: January 2018
- The 2018 Seminal Contribution to Research Prize was awarded to Sergey Fomin and Andrei Zelevinsky (posthumously) for their paper "Cluster algebras I: Foundations," published in 2002 in the Journal of the American Mathematical Society.

*The Steele Prize for Lifetime Achievement**The Steele Prize for Mathematical Exposition**The Steele Prize for Seminal Contribution to Research**The Steele Prize, 1970--1992*

These prizes were established in 1970 in honor of George David Birkhoff, William Fogg Osgood, and William Caspar Graustein, and are endowed under the terms of a bequest from Leroy P. Steele. From 1970 to 1976 one or more prizes were awarded each year for outstanding published mathematical research; most favorable consideration was given to papers distinguished for their exposition and covering broad areas of mathematics. In 1977 the Council of the AMS modified the terms under which the prizes are awarded. In 1993, the Council formalized the three categories of the prize by naming each of them: (1) The Leroy P. Steele Prize for Lifetime Achievement; (2) The Leroy P. Steele Prize for Mathematical Exposition; and (3) The Leroy P. Steele Prize for Seminal Contribution to Research.