2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/69531This paper has been withdrawn, because I have merged it with paper I of the series, math.AG/0312190. The main results of this paper now appear in sections 7-9 of the revised version of math.AG/0312190, with shortened and improved proofs.This paper has been withdrawnAlgebraic GeometryHigh Energy Physics - TheoryCategory Theorytext