Multiparty communication complexity of vector---valued and sum---type functions

  • Authors:
  • Ulrich Tamm

  • Affiliations:
  • German Language Department of Business Informatics, Marmara University, Istanbul, Turkey

  • Venue:
  • Information Theory, Combinatorics, and Search Theory
  • Year:
  • 2013

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Abstract

Rudolf Ahlswede's work on communication complexity dealt with functions defined on direct sums: vector---valued functions and sum---type functions. He was interested in single---letter characterizations and provided several lower bound techniques to this aim. In this paper we shall review these lower bounds and extend them to the "number in hand" multiparty model of communication complexity.