Group width

Michael H. Freedman

Research output: Contribution to journalArticlepeer-review


There are many "minimax" complexity functions in mathematics: width of a tree or a link, Heegaard genus of a 3-manifold, the Cheeger constant of a Riemannian manifold. We dene such a function w, "width", on countable (or finite) groups and show w(ℤk) = k - 1.

Original languageEnglish
Pages (from-to)433-436
Number of pages4
JournalMathematical Research Letters
Issue number3
StatePublished - May 2011
Externally publishedYes

ASJC Scopus subject areas

  • General Mathematics

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