PNAS announces 2005 Paper of the Year

WASHINGTON -- The PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES' first Paper of the Year prize will be awarded to Karl Mahlburg, a doctoral candidate in mathematics at the University of Wisconsin, Madison, for his paper "Partition congruences and the Andrews-Garvan-Dyson crank." Mahlburg's article solves a critical part of a mathematical puzzle in number theory. It was chosen from among 3,000 papers published in the journal in 2005. Mahlburg will be recognized on April 23 at the PNAS Editorial Board meeting in Washington, D.C.

This new prize acknowledges outstanding research articles published in PNAS and it will be awarded annually. PNAS is published by the National Academy of Sciences and is one of the world's most-cited multidisciplinary scientific journals, covering the biological, physical, and social sciences.

Mahlburg's paper, published in October 2005, is available online at An accompanying commentary on the paper is available at


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