On the hardness of approximating the permanent of structured matrices

Bruno Codenotti*, Igor E. Shparlinski, Arne Winterhof

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We show that for several natural classes of "structured" matrices, including symmetric, circulant, Hankel and Toeplitz matrices, approximating the permanent modulo a prime p is as hard as computing its exact value. Results of this kind are well known for arbitrary matrices. However the techniques used do not seem to apply to "structured" matrices. Our approach is based on recent advances in the hidden number problem introduced by Boneh and Venkatesan in 1996 combined with some bounds of exponential sums motivated by the Waring problem in finite fields.

Original languageEnglish
Pages (from-to)158-170
Number of pages13
JournalComputational Complexity
Issue number3-4
Publication statusPublished - 2002


  • Approximation of the permanent
  • Exponential sums
  • Hidden number problem


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