Joel Friedman 
Sheaves on Graphs, Their Homological Invariants, and a Proof of the Hanna Neumann Conjecture [PDF ebook] 

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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.

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Format PDF ● Halaman-halaman 106 ● ISBN 9781470419684 ● Penerbit American Mathematical Society ● Muat turun 3 kali ● Mata wang EUR ● ID 8056977 ● Salin perlindungan Adobe DRM
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