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Comment: Re:Comparing Apples to Apples (Score 1) 171 171

What I'm wondering is whether similarly relaxing the requirements on the classical computation (so that you only require such an approximate solution in the same sense, not an exact solution) will reduce the classical computational complexity of the problem significantly.

We plan to soon update our arxiv post to explain that the matrix inversion problem (with the parameters we consider) is BQP-complete, meaning it is as hard as anything that quantum computers can solve in polynomial time. This is strong evidence that classical computers need exponentially more time to solve the problem in general. Of course, there may be special cases, some of practical interest, where good classical algorithms exist.

If a 6600 used paper tape instead of core memory, it would use up tape at about 30 miles/second. -- Grishman, Assembly Language Programming

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