Sheaves on Graphs, Their Homological Invariants, and a Proof of the Hanna Neumann Conjecture

· American Mathematical Soc.
Ebook
106
Pages

About this ebook

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.
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.

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About the author

Joel Friedman, University of British Columbia, Vancouver, Canada.
Joel Friedman, University of British Columbia, Vancouver, Canada.

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