An asymptotic theory for recurrence relations based on minimization and maximization

  • Authors:
  • Hsien-Kuei Hwang;Tsung-Hsi Tsai

  • Affiliations:
  • Institute of Statistical Science, Academia Sinica, Taipei 11529, Taiwan;Institute of Statistical Science, Academia Sinica, Taipei 11529, Taiwan

  • Venue:
  • Theoretical Computer Science
  • Year:
  • 2003

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Abstract

We derive asymptotic approximations for the sequence f(n) defined recursively by f(n) = min1≤jn {f(j) + f(n - j)} + g(n), when the asymptotic behavior of g(n) is known. Our tools are general enough and applicable to another sequence F(n) = max1 ≤j{F(j) + F(n - j) + min{g(j),g(n-j)}}, also frequently encountered in divide-and-conquer problems. Applications of our results to algorithms, group testing, dichotomous search, etc. are discussed.