Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.
Dijkstra's algorithm has long been the quickest way of finding the shortest possible paths in a network, but researchers have ...
The equations that mathematicians use to study ... of Knots Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer. A New Algorithm ...
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