Sum-of-squares decomposition
After almost 20 years, math problem falls
July 15, 2011
MIT researchers’ answer to a major question in the field of optimization brings disappointing news — but there’s a silver lining.
Nonlinear thinker
January 29, 2010
With techniques for translating complicated equations into ‘sums of squares,’ Pablo Parrilo helps make sense of previously insoluble problems.
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