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Computational complexity
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A New Map Traces the Limits of Computation
A major advance in computational complexity reveals deep connections between the classes of problems that computers can — and can’t — possibly do.
A Grand Vision for the Impossible
Subhash Khot’s bold conjecture is helping mathematicians explore the precise limits of computation.
Computer Scientists Take Road Less Traveled
An infinitesimal advance in the traveling salesman problem breathes new life into the search for improved approximate solutions.