Reductions to the set of random strings: The resource-bounded case

This paper is motivated by a conjecture that BPP can be characterized in terms of polynomial-time nonadaptive reductions to the set of Kolmogorov-random strings. In this paper we show that an approach laid out in [Allender et al] to settle this conjecture cannot succeed without significant alteratio...

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Main Authors: Eric Allender, Harry Buhrman, Luke Friedman, Bruno Loff
Format: Article
Language:English
Published: Logical Methods in Computer Science e.V. 2014-08-01
Series:Logical Methods in Computer Science
Subjects:
Online Access:https://lmcs.episciences.org/723/pdf
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author Eric Allender
Harry Buhrman
Luke Friedman
Bruno Loff
author_facet Eric Allender
Harry Buhrman
Luke Friedman
Bruno Loff
author_sort Eric Allender
collection DOAJ
description This paper is motivated by a conjecture that BPP can be characterized in terms of polynomial-time nonadaptive reductions to the set of Kolmogorov-random strings. In this paper we show that an approach laid out in [Allender et al] to settle this conjecture cannot succeed without significant alteration, but that it does bear fruit if we consider time-bounded Kolmogorov complexity instead. We show that if a set A is reducible in polynomial time to the set of time-t-bounded Kolmogorov random strings (for all large enough time bounds t), then A is in P/poly, and that if in addition such a reduction exists for any universal Turing machine one uses in the definition of Kolmogorov complexity, then A is in PSPACE.
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spelling doaj.art-466a7f61f6cd45faa1220c986ef2bcd52024-03-08T09:37:13ZengLogical Methods in Computer Science e.V.Logical Methods in Computer Science1860-59742014-08-01Volume 10, Issue 310.2168/LMCS-10(3:5)2014723Reductions to the set of random strings: The resource-bounded caseEric Allenderhttps://orcid.org/0000-0002-0650-028XHarry BuhrmanLuke FriedmanBruno Loffhttps://orcid.org/0000-0001-7562-457XThis paper is motivated by a conjecture that BPP can be characterized in terms of polynomial-time nonadaptive reductions to the set of Kolmogorov-random strings. In this paper we show that an approach laid out in [Allender et al] to settle this conjecture cannot succeed without significant alteration, but that it does bear fruit if we consider time-bounded Kolmogorov complexity instead. We show that if a set A is reducible in polynomial time to the set of time-t-bounded Kolmogorov random strings (for all large enough time bounds t), then A is in P/poly, and that if in addition such a reduction exists for any universal Turing machine one uses in the definition of Kolmogorov complexity, then A is in PSPACE.https://lmcs.episciences.org/723/pdfcomputer science - computational complexitycomputer science - logic in computer science
spellingShingle Eric Allender
Harry Buhrman
Luke Friedman
Bruno Loff
Reductions to the set of random strings: The resource-bounded case
Logical Methods in Computer Science
computer science - computational complexity
computer science - logic in computer science
title Reductions to the set of random strings: The resource-bounded case
title_full Reductions to the set of random strings: The resource-bounded case
title_fullStr Reductions to the set of random strings: The resource-bounded case
title_full_unstemmed Reductions to the set of random strings: The resource-bounded case
title_short Reductions to the set of random strings: The resource-bounded case
title_sort reductions to the set of random strings the resource bounded case
topic computer science - computational complexity
computer science - logic in computer science
url https://lmcs.episciences.org/723/pdf
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AT harrybuhrman reductionstothesetofrandomstringstheresourceboundedcase
AT lukefriedman reductionstothesetofrandomstringstheresourceboundedcase
AT brunoloff reductionstothesetofrandomstringstheresourceboundedcase