Lower bounds on the redundancy in computations from random oracles via betting strategies with restricted wagers

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Lower bounds on the redundancy in computations from random oracles via betting strategies with restricted wagers

The Kučera-Gács theorem [Kuč85, Gác86] is a landmark result in algorithmic randomness asserting that every real is computable from a Martin-Löf random real. If the computation of the first n bits of a sequence requires n + h(n) bits of the random oracle, then h is the redundancy of the computation. Kučera implicitly achieved redundancy n log n while Gács used a more elaborate coding procedure w...

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A classic result in algorithmic information theory is that every infinite binary sequence is computable from a Martin-Löf random infinite binary sequence. Proved independently by Kučera [Kuč85] and Gács [Gác86], this result answered a question by Charles Bennett and has seen numerous applications in the last 30 years. The optimal redundancy in such a coding process has, however, remained unknow...

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ژورنال

عنوان ژورنال: Information and Computation

سال: 2016

ISSN: 0890-5401

DOI: 10.1016/j.ic.2016.09.010