Time-bounded incompressibility of compressible strings and sequences
For every total recursive time bound t, a constant fraction of all compressible (low Kolmogorov complexity) strings is t-bounded incompressible (high time-bounded Kolmogorov complexity); there are uncountably many infinite sequences of which every initial segment of length n is compressible to log n...
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Veröffentlicht in: | Information processing letters 2009-08, Vol.109 (18), p.1055-1059 |
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Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
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Online-Zugang: | Volltext |
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Zusammenfassung: | For every total recursive time bound
t, a constant fraction of all compressible (low Kolmogorov complexity) strings is
t-bounded incompressible (high time-bounded Kolmogorov complexity); there are uncountably many infinite sequences of which every initial segment of length
n is compressible to
log
n
yet
t-bounded incompressible below
1
4
n
−
log
n
; and there is a countably infinite number of recursive infinite sequences of which every initial segment is similarly
t-bounded incompressible. These results and their proofs are related to, but different from, Barzdins's lemma. |
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ISSN: | 0020-0190 1872-6119 |
DOI: | 10.1016/j.ipl.2009.06.013 |