Functions that have read-once branching programs of quadratic size are not necessarily testable

  • Authors:
  • Beate Bollig;Ingo Wegener

  • Affiliations:
  • FB Informatik, LS 2, Universität Dortmund, 44221 Dortmund, Germany;FB Informatik, LS 2, Universität Dortmund, 44221 Dortmund, Germany

  • Venue:
  • Information Processing Letters
  • Year:
  • 2003

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Abstract

A property of binary strings is constructed that has a representation by a collection of read-once branching programs of quadratic size but which is not ε-testable for some fixed ε 0. This shows that Newman's result [Proc. 41st FOCS, 2000, pp. 251-258]. cannot be generalized to functions representable by read-once branching programs of polynomial size.