On the power of algebraic branching programs of width two

Eric Allender, Fengming Wang

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

We show that there are families of polynomials having small depth-two arithmetic circuits that cannot be expressed by algebraic branching programs of width two. This clarifies the complexity of the problem of computing the product of a sequence of two-by-two matrices, which arises in several settings.

Original languageEnglish (US)
Pages (from-to)217-253
Number of pages37
JournalComputational Complexity
Volume25
Issue number1
DOIs
StatePublished - Mar 1 2016

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • General Mathematics
  • Computational Theory and Mathematics
  • Computational Mathematics

Keywords

  • Iterated matrix multiplication
  • algebraic branching programs
  • arithmetic circuits

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