Sheaves on Graphs, Their Homological Invariants, and a Proof of the Hanna Neumann Conjecture (Memoirs of the American Mathematical Society)

by Joel Friedman

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In this paper the author establishes some foundations regarding sheaves of vector spaces on graphs and their invariants, such as homology groups and their limits. He then uses these ideas to prove the Hanna Neumann Conjecture of the 1950s; in fact, he proves a strengthened form of the conjecture.
  • ISBN13 9781470409883
  • Publish Date 30 January 2015
  • Publish Status Active
  • Out of Print 1 July 2021
  • Publish Country US
  • Imprint American Mathematical Society
  • Format Paperback
  • Pages 106
  • Language English