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.AMS Author Handbook and the Instruction Manual are available in PDF format from the author package link. ... CD to the Electronic Prepress Department, American Mathematical Society, 201 Charles Street, Providence, RI 02904-2294 USA.

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

Author | : | Joel Friedman |

Publisher | : | American Mathematical Soc. - 2014-12-20 |

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