
The Strengthened Hanna Neumann Conjecture I: A Combinatorial Proof
(Revised July 6, 2010)

This paper attempted to give a combinatorial proof of
the Strengthened Hanna Neumann Conjecture, based on a sheaf
theoretic approach.
Both versions of these papers have errors, and at present
I am working on writing down a sheaf theoretic proof of the
Strengthened Hanna Neumann Conjecture before I return to seeing
what one can do without sheaf theory.
