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Prize: David P. Robbins Prize

David P. Robbins Prize 2019 Roger E. Behrend; Ilse Fischer; Matjaz Konvalinka

The 2019 David P. Robbins Prize was awarded to **Roger Behrend**, **Ilse Fischer** and **Matjaž Konvalinka **for their paper "Diagonally and antidiagonally symmetric alternating sign matrices of odd order," published in 2017 in *Advances in Mathematics* (Vol. 315, pp. 324-365).

Prize announcement as seen in *Notices of the AMS* and in the news release.

David P. Robbins Prize 2016 Christoph Koutschan; Manuel Kauers; Doron Zeilberger

Fourth award: to Christoph Koutschan, Manuel Kauers, and Doron Zeilberger for their paper, "Proof of George Andrews's and David Robbins's q-TSPP conjecture," Proceedings of the National Academy of Sciences (USA) (2011).

Prize announcement as seen in *Notices of the AMS* and in the news release.

David P. Robbins Prize 2013 Alexander Razborov

Third award: to Alexander Razborov "for his paper, "On the minimal density of triangles in graphs" (Combinatorics, Probability and Computing 17 (2008), no. 4, 603-618), and for introducing a new powerful method, flag algebras, to solve problems in extremal combinatorics."

Prize announcement as seen in *Notices of the AMS*.

David P. Robbins Prize 2010 Ileana Streinu

Second award: to Ileana Streinu of Smith College for her paper "Pseudo-triangulations, rigidity and motion planning", Discrete Comput. Geom. 34 (2005), no. 4, 587-635.

Prize announcement as seen in *Notices of the AMS*.

David P. Robbins Prize 2007 Samuel P. Ferguson; Thomas C. Hales

First award: to Samuel P. Ferguson and Thomas C. Hales, for the paper "A proof of the Kepler conjecture," by Thomas C. Hales, Annals of Mathematics, 162 (2005), 1065-1185 (Section 5 of this paper is jointly authored with Ferguson).

Prize announcement as seen in *Notices of the AMS*.