Progress in Lifting and Applications in Lower Bounds (Invited Talk)

Author Toniann Pitassi

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Author Details

Toniann Pitassi
  • University of Toronto, Canada
  • Institute for Advanced Study, Princeton, NJ, USA

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Toniann Pitassi. Progress in Lifting and Applications in Lower Bounds (Invited Talk). In 39th IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2019). Leibniz International Proceedings in Informatics (LIPIcs), Volume 150, p. 4:1, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)


Ever since Yao introduced the communication complexity model in 1979, it has played a pivotal role in our understanding of limitations for a wide variety of problems in Computer Science. In this talk, I will present the lifting method, whereby communication lower bounds are obtained by lifting much simpler lower bounds. I will show how lifting theorems have been used to solve many open problems in a variety of areas of computer science, including: circuit complexity, proof complexity, combinatorial optimization (size of linear programming formulations), cryptography (linear secret sharing schemes), game theory and privacy. At the end of the talk, I will sketch the proof of a unified lifting theorem for deterministic and randomized communication (joint with Arkadev Chattopadyhay, Yuval Filmus, Sajin Koroth, and Or Meir.)

Subject Classification

ACM Subject Classification
  • Theory of computation → Communication complexity
  • complexity theory
  • lower bounds
  • communication complexity


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