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arxiv: 1001.4462 · v2 · submitted 2010-01-25 · 💻 cs.IT · cs.CC· math.IT· math.LO

Not Every Domain of a Plain Decompressor Contains the Domain of a Prefix-Free One

classification 💻 cs.IT cs.CCmath.ITmath.LO
keywords domaindecompressoreveryoptimalplainprefix-freequestionanswer
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C.Calude, A.Nies, L.Staiger, and F.Stephan posed the following question about the relation between plain and prefix Kolmogorov complexities (see their paper in DLT 2008 conference proceedings): does the domain of every optimal decompressor contain the domain of some optimal prefix-free decompressor? In this paper we provide a negative answer to this question.

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