Stability of properties of Kolmogorov complexity under relativization

  • Authors:
  • An. A. Muchnik;A. E. Romashchenko

  • Affiliations:
  • -;Kharkevich Institute for Information Transmission Problems, RAS, Moscow, Russia

  • Venue:
  • Problems of Information Transmission
  • Year:
  • 2010

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Abstract

Assume that a tuple of binary strings $$ \bar a $$ = 驴a 1 ..., a n 驴 has negligible mutual information with another string b. Does this mean that properties of the Kolmogorov complexity of $$ \bar a $$ do not change significantly if we relativize them to b? This question becomes very nontrivial when we try to formalize it. In this paper we investigate this problem for a special class of properties (for properties that can be expressed by an 驴-formula). In particular, we show that a random (conditional on $$ \bar a $$ ) oracle b does not help to extract common information from the strings a i .