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| | Martin D. Kruskal Dies; Mathematician Was 81 - New York Times |
 | | Martin D. Kruskal, a mathematician whose wide-ranging research touched on astrophysics, nuclear fusion and the soliton, a unique form of wave that he helped describe in the 1960s, died Dec. 26 in Princeton, N.J. He was 81. |
 | | Working on a phenomenon that had been observed in the 19th century, Dr. Kruskal and a fellow researcher, Norman J. Zabusky, studied the behavior of a nonlinear wave that is able to pass through an opposing wave of the same type without affecting the energy or direction of either wave. |
 | | Earlier, Dr. Kruskal, who was affiliated with Princeton University from 1951 to 1989, worked on a classified project to develop a process for controlled nuclear fusion in a Princeton laboratory. |
| www.nytimes.com /2007/01/13/obituaries/13kruskal.html?ex=1326344400&en=8357b31a10c56f61&ei=5088&partner=rssnyt&emc=rss (637 words) |
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